I found it occurs in case when buttons as file tabs are selected. For tabs it behaves correctly.
-- <https://forum.pspad.com/read.php?4,77626,77628> PSPad freeware editor https://www.pspad.com
- mark that a file changed [77626] Peter . eisentraeger2
- Re: mark that a file changed [77627] Jan Fiala
- Re: mark that a file changed [77628] Jan Fiala
- Re: mark that a file changed [77925] David Jonas
