Search results dialog (Alt-F7) does not refresh screen when moving

[ssvine]

Far Manager version

3.0.6278.0

OS version

10.0.19045.4046

Other software

No response

Steps to reproduce

1. Press Alt-F7, then press Enter to show the results dialog
2. Move the results dialog with the mouse

Expected behavior

When moving the dialog I expect to see the panel contents (or whatever it was) behind it.

Actual behavior

I see the remainings of the dialog.

[HamRusTal]

In fact, what we see in the background is a snapshot of the dialog as it looked at some point during the search. The results are particularly spectacular if you move the dialog around while the search is still in progress.