Brushtools draws broken lines (1.3.2 version)

Hi All, today I tried out the latest dev version, 1.3.2. I played around and I noticed that the brush tool draws “broken” lines when it is used rapidly. If i go slow lines are drawn properly, but when I move the mouse faster this is the result: … -42-37.png

Is it a bug or…? Am I the first to report this behavior?

My system is: Lubuntu 16.04.2 LTS, Nuveau opensource drivers, 12gb of ram, GEForce940M, i7.

Ps: I noticed that when the 1.3.2 is open, I cannot launch the, is this a normal behavior or…?
installed it using the appimage version but since I installed the 1.3.2 I