I am not native english speaker.

I use Jira in Polish language and all issues have Polish names.

Using UTF diacritical letters with "create branch" on Bitbucket feature removes letter so branch names are unreadable and don't make sense.

Please convert diacritical characters to its non-diacritical versions like this:

ą -> a

ć -> c

ę -> e

ł -> l

ń -> n

ó -> o

ś -> s

ź -> z

ż -> z