Hello @Tomáš Kvítek 

The first thing I would try is resetting your Windows layout-

Then restart Studio- Is the problem resolved?

If not then the issue might be caused by an incompatible 'plugin' especially if you have recently updated Studio and the plug in is out of date and needs updating.

Please go to the SDL Plugin management area

And uninstall the Plugins one by one until the issue is resolved.

If you could let us know which plugin was causing the conflict that would be great.

In reference yto the last screen shot- 

Unexpected exception when initializing view part Fragment Match

Please refer to the following article-

https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0034055

Please let us know which solution resolved the problem.

Hello Steven.

your comment is truly appreciated. Once done the updates, will post about the cause of the SDL crash.

many thanks

Tomas

Hello Steven.

your comment is truly appreciated. Once done the updates, will post about the cause of the SDL crash.

many thanks

Tomas