My 2009 soft top glass rear window worked its way out of the fabric. It hung by the cords on either side that connected it to the heating elements in the glass. I tried every fix that was suggested on youtube (and there are a bunch of them, this seems to be a real problem) but none of them worked more than a day or two.
I fixed the problem by entirely replacing the convertible soft top.
BUT, I've bought another convertible with a soft top, a 2017 BMW 230. I'm looking for tips and suggestions about how to make sure this doesn't happen again, it was traumatic! And expensive! The top the window fell out of was in otherwise perfect condition. The opening/closing of the top had no problems.

Any help here?