1. panels position : closing paintsorm while panels are hidden (with hide panel key), then when paintstorm is reopened, panels positions are changed (all grouped on the left of the screen.)
2. hide panels : after pressing hide panels key a second time, to reopen panels, then pressing 'hide panels' key again doesn't hide the panels anymore. It works again if there is one clic on the canvas. (but if the cursor is above a panel there is not this problem, it's only not working when the cursor is over the canvas.)
3. Button disappears in custom panel : in custom panel a button ('load default brush', but it's the same for some others) is hidden at launch of paintsorm. But if there is a right clic in Brush panel (to show brush panel menu) this causes the disappeared button to reappear in custom panel.