I'm using a dual-monitor setup with the Technical Desktop maximized to spread across both, and I'm experiencing an issue where the Houdini UI (and only the Houdini UI) will frequently freeze panes that are on one of the two monitors, while the panes on the other monitor are still responsive. I have to do something to refresh the display (ex: make another application window active, click the desktop background, etc.) in order to unlock the Houdini UI. The frequency of the freezes varies considerably; sometimes one side will lock up, and once I refresh the display to unlock it, the other side will lock up. Sometime only one side will lock up repeatedly.

EDIT: this issue seems partly reproduceable; if I use the spacebar within the viewport to switch to camera mode and change/tumble the view, the panes on the other monitor freeze every time. However, I see the opposite case as well, where the view pane is frozen but the network/parameter panes are functional (that does not seem as easy to reproduce, but is every bit as annoying, I assure you).

No other applications being used across dual-monitors reflect this issue. I've heard from other folks using Houdini this happens to them as well, so it is not something unique to my machine. I've tried various permutations of the Centos Window Behavior settings in case that had anything to do with it, but the issue persists.

I'm using:
Houdini v13.0.294
CentOS v6.4
Nvidia Quadro FX 5800, driver v319.32

Has anyone else experienced this problem recently on a similar system?

I've discovered this problem occurs even with Houdini restricted to a single monitor. Using the spacebar hotkey to switch into camera mode and adjusting the camer in the View pane immediately locks up all the other panes until you click outside Houdini.

I'm also repeatedly seeing the view pane likewise lock up after tumbling and having to click outside Houdini to unlock the network and parameter panes, then making changes in the network or parameter panes. Clicking outside of Houdini is required to unlock the View pane.

This does not occur in any other 3D (Maya, Katana etc.) or 2D (Nuke) applications, only Houdini.