Problems with 4.2 version

I have several problems with the new 4.2 version.

1) If I leave the computer for a while with a score open, the screen display is corrupted when I come backe to the computer (ref attached clip). The heading menu has disappeared and only the score itself and side menu is displayed. And I can't find a way to get the top meny back. The only way to get back a normal display is to close the program and restart. This means that I cannot even save my score before i close the program.
Has anybody else had this problem .

2) when I play back a score bu using the repeat option (marking of sequence to be played) it somtimes start playing somewhere else when I push the play button. Sometimes the pan is also wrong. The pan markers is shifted to another location in the score and don't follow the played music.

I have never had these problems in version 3.

thanks for any response