On Oct 20 2014 I applied the Mavericks Security Update-005 2014 and upgraded TotalSpaces2. Afterwards, when I transition, the Dock flashes and it is a bit distracting. I could be crazy but I don’t believe it ever did this before this latest upgrade.
To be a bit more descriptive, by “flashing” I mean the Dock disappears for about 1/4 of a second, reappears for about 1/4 of a second, and then the screen transition occurs. There is no flashing of the Dock after the transition occurs.
The transition settings are set to “Slide, fast.” I do believe I set it to “Cube” and observed the same behavior.
I should note that this only happens on my my MacBook Pro 2010. My desktop at work (MacPro 2012) does not exhibit the same problem. Both computers have the very latest Mavericks and TotalSpaces2 (both updated circa October 22).