Tab content of active tab (inside a Accordion) disappears after opening the Accordion.

Created by: sebastianbrosch

Operating system: Windows 10 Browser: Google Chrome 92.0.4515.131

Since Bootstrap 5.1.0 the tab content of the first tab inside a Accordion isn't visible anymore.

Demo Bootstrap 5.0.2 (working): https://codepen.io/sebastianbrosch/pen/NWjONrJ Demo Bootstrap 5.1.0 (not working): https://codepen.io/sebastianbrosch/pen/LYyBXpa

After reopening the Accordion the content of the first Tab disappears. Opening the Accordion is removing .show class from .tab-pane (and also adds a .collapse class to .tab-pane). The content of the active tab disappears after reopening the Accordion.

It looks like this commit caused the issue: https://github.com/twbs/bootstrap/pull/34220/commits/bb668550b19610b5f438d6d98be7eec4efbb0a26. If I revert this commit and try the example above the tabs are working again.