Just found that the usercard expansion looks broken in Chrome. See the animation below:
Only some kind of blinking in the top left corner of the user icon instead of showing a usercard.
Works as expected if I switch the focus (activate) to another application.
Windows 11, Google Chrome
Version 124.0.6367.61 (Official Build) (64-bit)
<div class="esc-remove magic-popup">
with absolute positioning is inserted before the<div class="user-details">
- for a very small amount of time 😏.