after upgrading to plasma 5.17.2 I've noticed that in the Task switcher some effects (e.g. Cover Switch or Flip Switch) don't work anymore.
Do you have a solution for that?
Thanks to everybody.
I've found a solution (even if I really don't know why it works): disable the compositor and soon after enable it .... and flip switch works again.
Plasma needs cleaning cache after updates (major usually).
Several such issues have filled the forum after 5.17...