Page Jumps to Top When Clicking After Theme Menu Disappears

[WantenMN]

Description

There is an issue, on any sufficiently long page, the following steps consistently reproduce an annoying behavior:

Steps to Reproduce

1. Open a page that is long enough to require scrolling.
2. Scroll down the page, causing the menu bar to automatically hide.
3. Move the mouse to the menu bar's position to make it reappear.
4. Click on "Change theme" to display the theme selection list.
5. Move the mouse away from the menu bar, causing both the menu bar and the theme list to disappear.
6. Click anywhere on the page.

Expected Behavior

The page should remain at the current scroll position after clicking.

Actual Behavior

When clicking on the page, it instantly jumps to the top, losing the current reading position, which is very frustrating.

This issue disrupts the reading experience and should be addressed.