@Gunnar: Thanks for looking into this and sorry for my late reply. I tested the workaround suggested by David in comment #19 and can confirm that this solved the problem for me. Language Selector works as expected now.
@Gunnar: Thanks for looking into this and sorry for my late reply. I tested the workaround suggested by David in comment #19 and can confirm that this solved the problem for me. Language Selector works as expected now.