1)     finish typing code in the editor
    2)     hit the `Run` button on the toolbar
    3)    click the editor tab on the main window
    4)     try to use the editor - the window will become active but sometimes
the cursor won`t and you can`t edit.  If I activate any other window then go
back to the editor window everything is fine again.

[Janne] When editing long time with the editor the caret just sometimes disappears. (scrolling quickly down, copy paste)
It`s sometimes possible to get it back by above step 4). But sometimes it don`t help and you have
to close the file and re-open it again. It`s sometimes possible to type text even the caret isn`t visible
and sometimes typing don`t work at all or works incorrectly.
There are "areas" in which you can click and caret appears correctly and areas where when clicked the caret disappears.


[Mila]
If you click on the tab, you can see a dotted line around the name of the tab. It means that the tab itself (not the editor) has a focus. The editor in this case doesn`t have the focus and therefore n
o caret is visible. Of course if the tab is clicked the focus could be forwarded to the editor component. However this cannot be done in the editor but rather somewhere in the window system I guess.
For the problems from Janne I need the steps how to reproduce them.