I'm running Win 10 Creators update (i.e. build 1703) with latest updates on two machines that also run win blinds (latest version) and am having the same problem on both of them.
The task bar will submerge to half its normal size and nothing can be accessed for several minutes (when I touch the mouse to the taskbar I just get the hour glass) -- and whatever I have open is also unresponsive. If I open task manager sometimes it clears up, otherwise it stays this way for up to 10 minutes. This happens frequently. When I unload win blinds the problem goes away, making me fairly certain it's win blinds that's the problem.
The two machines are quite different: one is a dell xps laptop, 8gb ram and 500 gb ssd drive, i5 processor; the other is an asus desktop with 16gb ram, 500 gb ssd i7 processor and nvidia graphics card with 2gb graphics memory. That this is happening with windows blinds on these two quite different machines makes me think I've found a bug.
Anyone have this or similar experience and/or suggestions?