First, you might see if your issue is covered in the sections below.
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Cinch crashes when coming out of sleep
Please update or download Cinch 1.2.3 or later.
This is a known issue with the late 2016 MacBook Pros with Touch Bar which was resolved in Cinch 1.2.3 (February 08, 2017).
The top edge can be difficult to cinch to on OS X 10.11 El Capitan as this gesture is now used to activate Spaces/Mission Control. We're exploring workarounds for this issues.
Some windows have a minimum size, so even if you try to resize the window smaller yourself, it will not go any smaller. This might cause a window to take up more than 50% of the screen and might overlap another window. Apple's own apps (iPhoto, iMovie, Preview, etc) have particularly wide minimum widths, as Apple intends for you to use many of these apps in Full Screen mode now.