Not sure why there are that many error in the Bootstrap 5 docs, had to check in their source code to be sure what the default trigger is and it seems to be click instead of hover. The docs on their site is wrong.
Popovers · Bootstrap v5.3 (getbootstrap.com)
I’ve updated the default back to click, don’t know why the click didn’t work in previous version (Popover still failing - Wappler General / Bugs - Wappler Community) but tested the new script without setting an argument for the trigger and it will use the click as trigger. Sorry that it took this long to figure out and we didn’t test it enough. We updated the UI elements based on the docs from Bootstrap and the script is tested independent from the UI which is why we didn’t notice it.