[16.0.53] Search / Find previous disabled

For me the option to search backwards is always inactive. Also the key combination Shift-F3 does not work.
Is there something that affects this, or did this break in the last beta?

Bildschirmfoto 2022-03-17 um 15.17.32

Do a CTRL+F, put in some text and do a find.

Then you can F3 or Shift+F3.

I'm not saying that's "right" but I can make it become enabled like that.

Now it works again.
I had the case that F3 was active, but Shift-F3 was not, while the search window was open.