I've recently upgraded to version 11.2 (build 11.2.0.121) on Win7 x64 and I'm having problems with various popup elements disappearing before I can use them.For example when I-select the Draw Mask brush-right click to adjust its size-the brush settings dialog pops up with the cursor positioned over the size slider-almost immediately the tooltip "Brush Size" shows up and makes the whole brush settings dialog disappear