Invisible Canvas skeleton element blocks conversation scroll after closing Canvas

[itsmartashub]

Description

When the Edit button (next to Copy code in the markdown header of code snippets) is clicked, a Canvas is opened for editing.
After closing this Canvas, an invisible element remains in the DOM, which blocks the scrolling of the conversation layout.
This issue occurs because the invisible element is positioned over the layout, and the user is not aware of its presence.

This behavior is consistent even when the browser extension is turned off, indicating that the issue originates from the original ChatGPT website.

The issue extends beyond just scrolling - it affects the GPThemes floating button toggle functionality.
The invisible element is actually a Canvas loading skeleton that serves as one of the key selectors for dynamically toggling the GPThemes floating button.

This causes inconsistent behavior when toggling the floating button between two states:

1. When Canvas is open (floating button hidden)
2. When Canvas is closed (floating button shown)

The problematic selector that interacts with this invisible Canvas skeleton is:

body:has(.absolute.z-20.h-full.transition-shadow.overflow-hidden.left-0 section.popover main [class*="absolute left-0 top-0 h-full w-full rotate-45 bg-gradient-to-r from-transparent via-black/20 to-transparent opacity-50 dark:via-white/5"])

Steps to Reproduce:

1. Open any conversation with code snippets
2. Click Edit button next to Copy code or Edit in Canvas from chat's footer
3. Close the Canvas editor
4. Try scrolling over the area where the code snippet was
5. Observe the GPThemes floating button behavior - it will show incorrect states due to the persisting invisible Canvas skeleton affecting the selector

Suggested Fix:

• Adding pointer-events: none to the invisible Canvas loading skeleton element could resolve this issue.
• However, I will wait for the OpenAI team to address this, as the mistake is on their end.
• Make GPThemes floating button always visible for now

Screenshots

Without GPThemes

With GPThemes

Removed some styling to see what invisible element represents