Increasing font size of ChatGPT app 1.2026.118 on macOS: Doesn't work

I’m seeing a related issue on ChatGPT for macOS 1.2026.118. In my case, the problem is not that text zoom never works. The issue is that the message/content area does not correctly keep or restore the custom text size. Current behavior: * When I open the app, the chat message text is small/default-sized. * The input box/composer text is already using my custom enlarged text size correctly. * If I press Command + directly, the message area does not always behave as expected. * However, if I first press Command 0 to force the view back to default, then press Command + again, the message text can be enlarged correctly. * The problem comes back when I switch to another conversation. After switching conversations, the message/content area resets to the small/default text size again. * The input box still keeps the custom enlarged text size. So it looks like the zoom/font-size state is being applied inconsistently: * The composer/input box preserves the custom text size. * The chat message/content area loses it when opening the app or switching conversations. * Command 0 followed by Command + can temporarily fix it, but the fix is not persistent. Environment: * ChatGPT for macOS: 1.2026.118 * Device: MacBook Pro with Apple M1 Pro * Memory: 16 GB * macOS: Tahoe 26.5 Expected behavior: The message/content area and the input box should both respect the same user-defined text size, and the setting should persist after opening the app or switching conversations.