**Before this commit**
When a popover is shown and then repositioned to a different placement
(i.e. due to window scrolling or resize), its arrow is misplaced.
This is due to the fact that classnames added in order to correctly place
its arrow are just added to the previous ones instead of replacing all
the needed classnames.
**After this commit**
The classnames are now properly replaced instead of just being appended.
closesodoo/odoo#106495
X-original-commit: c54cc2f87930147b5addb6f447574c677ef3504d
Signed-off-by: Luca Vitali <luvi@odoo.com>
Bruno Boi
7f257a2025