video window whitened

I just replaced a 14.04 (where mplayer worked well) with a 15.10 beta and found a strange, but rather annoying than severe bug:

When watching a video and using the cursor up key to skip forward, the video window becomes brighter and brighter and gets completely white. After one or two seconds, I guess with the next full picture in the stream, it becomes normal again. Annoying when trying to find a scene by skipping forward.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: mplayer2 2.0-728-g2c378c7-4build1
ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2
Uname: Linux 4.2.0-14-generic x86_64
ApportVersion: 2.19.1-0ubuntu2
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Oct 10 10:20:58 2015
InstallationDate: Installed on 2015-10-08 (1 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
SourcePackage: mplayer2
UpgradeStatus: No upgrade log present (probably fresh install)