bern
bern
I'm having the same issue that @madser123 described, i ran some tests on my own and for me this error starts happening when opening ~4+ (empty) windows using `open-many`. Though...
Having the exact same error as Rirush on sbcl/2.2.4. [lispnik's solution](https://github.com/sharplispers/prepl/pull/4#issue-951961920) doesn't work for me so i switched to sbcl-bin/2.1.1. Anyone got a solution yet?
There are shortcuts for going back and forth (Ctrl+B Ctrl+F) but they seem to be broken