Sampler won't change back to brush after sampling colour

Bit of a problem usign here. Sometimes when I use the colour sampler, it sticks on the sampler after I've grabbed my colour. Most of the time, it switches back to my brush so I can use the colour, but the odd time, it doesn't n' I have to manually hit the brush key. It's not the end of the world or anything, but it's really annoying.

I'm using a tablet, so I don;t know if that'd have any affect. I've always used a tablet with PyxelEdit though n' haven't seen the problem before the latest beta 0.3.109.

Everything else is brilliant though. Loving the new flip shortcuts.  They've saved me so much time.