HG_Peer_OffScreenWindow appears while creating figures in visible-off mode

I have recently switched to using MATLAB2016a, and I'm seeing a strange behavior. Even with defaultFigureVisible set to 'off', every time that a figure would be created, instead a small white box appears in the upper left hand side of my screen, and steals focus for MATLAB.

The name of this window is HG_Peer_OffScreenWindow. I can't figure out where it's coming from, or how to make it stop appearing. A regular message that started to appear after the update to the newer matlab version is:

Undefined function 'rmiml.visibleInToolstrip' for input arguments of type 'char'.

My 2012 version didnt have any of these problems.

EDIT: It appears that the print function causes the HG_Peer figure to pop up.

[Daan Hubert]

Bram, were you able to solve or work around this annoying issue?

In batch mode I always create figures using (Matlab R2013b) in invisible mode to save CPUtime needed to display the graphic. But this pop-up is destroying this workflow.

Answer 1

[Daan Hubert]

Just figured out that changing windowmanager from twm to fluxbox resolved my issue.