diff --git a/ts/lib/editable/mathjax-element.svelte.ts b/ts/lib/editable/mathjax-element.svelte.ts
index c53844710..bea0390c7 100644
--- a/ts/lib/editable/mathjax-element.svelte.ts
+++ b/ts/lib/editable/mathjax-element.svelte.ts
@@ -22,9 +22,9 @@ function trimBreaks(text: string): string {
         .replace(/\n*$/, "");
 }
 
-export const mathjaxConfig = {
+export const mathjaxConfig = $state({
     enabled: true,
-};
+});
 
 interface MathjaxProps {
     mathjax: string;
diff --git a/ts/routes/editor/EditorField.svelte b/ts/routes/editor/EditorField.svelte
index c7f6fb9d8..da04d2627 100644
--- a/ts/routes/editor/EditorField.svelte
+++ b/ts/routes/editor/EditorField.svelte
@@ -6,6 +6,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import type { Readable } from "svelte/store";
 
     import type { EditingAreaAPI } from "./EditingArea.svelte";
+    import { mathjaxConfig } from "$lib/editable/mathjax-element.svelte";
 
     export interface FieldData {
         name: string;
@@ -117,13 +118,15 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
                 fontSize={field.fontSize}
                 api={editingArea}
             >
-                {#if flipInputs}
-                    <slot name="plain-text-input" />
-                    <slot name="rich-text-input" />
-                {:else}
-                    <slot name="rich-text-input" />
-                    <slot name="plain-text-input" />
-                {/if}
+                {#key mathjaxConfig.enabled}
+                    {#if flipInputs}
+                        <slot name="plain-text-input" />
+                        <slot name="rich-text-input" />
+                    {:else}
+                        <slot name="rich-text-input" />
+                        <slot name="plain-text-input" />
+                    {/if}
+                {/key}
             </EditingArea>
         </div>
     </Collapsible>
diff --git a/ts/routes/editor/editor-toolbar/OptionsButton.svelte b/ts/routes/editor/editor-toolbar/OptionsButton.svelte
index 7be70076a..952837fbb 100644
--- a/ts/routes/editor/editor-toolbar/OptionsButton.svelte
+++ b/ts/routes/editor/editor-toolbar/OptionsButton.svelte
@@ -34,7 +34,6 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
             bridgeCommand("toggleMathjax");
         } else {
             setColConfig("renderMathjax", mathjaxConfig.enabled);
-            // FIXME: refresh
         }
     }