Keepass causes immediate Linux logout when using auto-type

Today I had to restart my computer after a total freeze of Linux. After that I now have the problem that **KeepassXC 2.7.1 leads to a immediate logout of my Linux system as soon as I try to use the auto-type functionality**. It doesn't matter if it should type a user name, a password or both. I also tried different credentials - the problem stays the same.
In the weeks before I never had this problem, using this function very often.
=> __What could be the root cause for that problem?__

- Another odd thing is that KeePass asks now for a confirmation if it should auto-type into the window which was active before. It never posed this question before. I know this is a setting but I never changed this setting. - A second restart of Linux didn't solve this problem. After the restart I get the information that there is no space on partition /boot. But there are 82MB free space on this partition.