Yakuake is sometimes calculating display dimensions (width) wrong. It works always for first window show, but after second retract/open it is calculated wrong.

Reproducible: Always

Steps to Reproduce:
1. Create standard plasma panel on the left of your screen
2. Set yakuake dimensions to 100% width (and 100% height)
3. `killall yakuake`
4. Start yakuake
5. Open yakuake window, see that window has correct width
6. Retract and open yakuake, see that window has wrong width
Actual Results:  
Yakuake calculates usable screen width wrong. Part of yakuake is not visible.

Expected Results:  
Yakuake always uses correct screen width.

I'm using two display setup with Intel graphics.
I found two similar bugs, but they are always about resolution taken from different screen. Which is not my case:
 - https://bugs.kde.org/show_bug.cgi?id=310155
 - https://bugs.kde.org/show_bug.cgi?id=308866