Thanks Sven , the problem is fixed for Shift+Drag. I confirm. But at the same time the bug still occure with brush size on 2 points :I also noticed this one but I didn't get the time to report it ( Linux Mint 11 64b ).
1.Problem when creating custom brush preset:
I import a shape from my photoshop brushes, once I put the size and save the preset, I can start using it,but once I press "shift+left click and drag" the size goes completly to zero and I'm not able to increase thesize anymore using shift and drag. I only can rezise it again using the "edit brush settings panel.
It happen with large brush mask (not only from Ps) , when they got reduced under a certain point.
That problem should be fixed since yesterday afternoon.