diff --git a/public/index.html b/public/index.html
index 5c847998f..3abef0544 100644
--- a/public/index.html
+++ b/public/index.html
@@ -2877,11 +2877,12 @@
                             </div>
                             <h4 data-i18n="Enter a Model ID">Enter a Model ID</h4>
                             <div class="flex-container">
-                                <input id="custom_model_id" class="text_pole wide100p" maxlength="500" value="" autocomplete="off" data-i18n="[placeholder]Example: gpt-3.5-turbo" placeholder="Example: gpt-3.5-turbo">
+                                <input list="model_custom_select_fill" id="custom_model_id" class="text_pole wide100p" maxlength="500" value="" autocomplete="off" data-i18n="[placeholder]Example: gpt-3.5-turbo" placeholder="Example: gpt-3.5-turbo">
+                                <datalist id="model_custom_select_fill" class="text_pole model_custom_select"></datalist>
                             </div>
                             <h4 data-i18n="Available Models">Available Models</h4>
                             <div class="flex-container">
-                                <select id="model_custom_select" class="text_pole"></select>
+                                <select id="model_custom_select" class="text_pole model_custom_select"></select>
                             </div>
                             <h4 data-i18n="Prompt Post-Processing">Prompt Post-Processing</h4>
                             <select id="custom_prompt_post_processing" class="text_pole" title="Applies additional processing to the prompt before sending it to the API." data-i18n="[title]Applies additional processing to the prompt before sending it to the API.">
diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index f8b61f89f..37551dd34 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -1551,10 +1551,10 @@ function saveModelList(data) {
     }
 
     if (oai_settings.chat_completion_source == chat_completion_sources.CUSTOM) {
-        $('#model_custom_select').empty();
-        $('#model_custom_select').append('<option value="">None</option>');
+        $('.model_custom_select').empty();
+        $('.model_custom_select').append('<option value="">None</option>');
         model_list.forEach((model) => {
-            $('#model_custom_select').append(
+            $('.model_custom_select').append(
                 $('<option>', {
                     value: model.id,
                     text: model.id,
@@ -3164,7 +3164,7 @@ async function getStatusOpen() {
     }
 
     if (oai_settings.chat_completion_source === chat_completion_sources.CUSTOM) {
-        $('#model_custom_select').empty();
+        $('.model_custom_select').empty();
         data.custom_url = oai_settings.custom_url;
         data.custom_include_headers = oai_settings.custom_include_headers;
     }
diff --git a/public/scripts/slash-commands/SlashCommandArgument.js b/public/scripts/slash-commands/SlashCommandArgument.js
index e27831a0c..76642a160 100644
--- a/public/scripts/slash-commands/SlashCommandArgument.js
+++ b/public/scripts/slash-commands/SlashCommandArgument.js
@@ -73,7 +73,7 @@ export class SlashCommandArgument {
         this.forceEnum = forceEnum;
 
         // If no enums were set explictly and the type is one where we know possible enum values, we set them here
-        if (!this.enumList.length && this.typeList.includes(ARGUMENT_TYPE.BOOLEAN)) this.enumList = commonEnumProviders.boolean()();
+        if (!this.enumList.length && this.typeList.length === 1 && this.typeList.includes(ARGUMENT_TYPE.BOOLEAN)) this.enumList = commonEnumProviders.boolean()();
     }
 }
 
diff --git a/public/scripts/utils.js b/public/scripts/utils.js
index 5edf8e4e0..67203adc6 100644
--- a/public/scripts/utils.js
+++ b/public/scripts/utils.js
@@ -623,6 +623,25 @@ export function isFalseBoolean(arg) {
     return ['off', 'false', '0'].includes(arg?.trim()?.toLowerCase());
 }
 
+/**
+ * Parses an array either as a comma-separated string or as a JSON array.
+ * @param {string} value String to parse
+ * @returns {string[]} The parsed array.
+ */
+export function parseStringArray(value) {
+    if (!value || typeof value !== 'string') return [];
+
+    try {
+        const parsedValue = JSON.parse(value);
+        if (!Array.isArray(parsedValue)) {
+            throw new Error('Not an array');
+        }
+        return parsedValue.map(x => String(x));
+    } catch (e) {
+        return value.split(',').map(x => x.trim()).filter(x => x);
+    }
+}
+
 /**
  * Checks if a number is odd.
  * @param {number} number The number to check.
@@ -1539,8 +1558,8 @@ export function flashHighlight(element, timespan = 2000) {
  * @returns {boolean} Whether the control has an animation applied
  */
 export function hasAnimation(control) {
-    const animatioName = getComputedStyle(control, null)["animation-name"];
-    return animatioName != "none";
+    const animatioName = getComputedStyle(control, null)['animation-name'];
+    return animatioName != 'none';
 }
 
 /**
diff --git a/public/scripts/world-info.js b/public/scripts/world-info.js
index d632015d0..9777afcd3 100644
--- a/public/scripts/world-info.js
+++ b/public/scripts/world-info.js
@@ -1,5 +1,5 @@
 import { saveSettings, callPopup, substituteParams, getRequestHeaders, chat_metadata, this_chid, characters, saveCharacterDebounced, menu_type, eventSource, event_types, getExtensionPromptByName, saveMetadata, getCurrentChatId, extension_prompt_roles } from '../script.js';
-import { download, debounce, initScrollHeight, resetScrollHeight, parseJsonFile, extractDataFromPng, getFileBuffer, getCharaFilename, getSortableDelay, escapeRegex, PAGINATION_TEMPLATE, navigation_option, waitUntilCondition, isTrueBoolean, setValueByPath, flashHighlight, select2ModifyOptions, getSelect2OptionId, dynamicSelect2DataViaAjax, highlightRegex, select2ChoiceClickSubscribe, isFalseBoolean, getSanitizedFilename, checkOverwriteExistingData, getStringHash } from './utils.js';
+import { download, debounce, initScrollHeight, resetScrollHeight, parseJsonFile, extractDataFromPng, getFileBuffer, getCharaFilename, getSortableDelay, escapeRegex, PAGINATION_TEMPLATE, navigation_option, waitUntilCondition, isTrueBoolean, setValueByPath, flashHighlight, select2ModifyOptions, getSelect2OptionId, dynamicSelect2DataViaAjax, highlightRegex, select2ChoiceClickSubscribe, isFalseBoolean, getSanitizedFilename, checkOverwriteExistingData, getStringHash, parseStringArray } from './utils.js';
 import { extension_settings, getContext } from './extensions.js';
 import { NOTE_MODULE_NAME, metadata_keys, shouldWIAddPrompt } from './authors-note.js';
 import { isMobile } from './RossAscends-mods.js';
@@ -883,7 +883,7 @@ function registerWorldInfoSlashCommands() {
         }
 
         if (Array.isArray(fieldValue)) {
-            return fieldValue.map(x => substituteParams(x)).join(', ');
+            return JSON.stringify(fieldValue.map(x => substituteParams(x)));
         }
 
         return substituteParams(String(fieldValue));
@@ -950,7 +950,7 @@ function registerWorldInfoSlashCommands() {
         }
 
         if (Array.isArray(entry[field])) {
-            entry[field] = value.split(',').map(x => x.trim()).filter(x => x);
+            entry[field] = parseStringArray(value);
         } else if (typeof entry[field] === 'boolean') {
             entry[field] = isTrueBoolean(value);
         } else if (typeof entry[field] === 'number') {