Thread:Skin talk:Chameleon/After 1.1.1 update, a modal popup suddenly opens within a carousal instead of going over the entire screen as before./reply

Normally this should be independent from either Chameleon or Bootstrap. I'd expect the video player to take care of that.

To find out, which component exactly introduced the issue, I'd try to upgrade them one by one. This can be done by requiring a specific version in composer.json.

E.g. to fix Bootstrap to 3.2.0 it should work to run the following from your MW installation directory:

Is your wiki public, by any chance?