Search in Apple Music on macOS 26.2 Tahoe is not working any more

After upgrading to the actual verison of Apple Music (Ex-iTunes) Version 1.6.2.57 on macOS 26.2 on a MacBook Pro M4 Max (16") the Search function is no useable any more.

When I want to search on local tracks or the iTunes Store I cant write any word, artist, track or anything else because after the first character the input was deleted. When I try writing faster somtimes i can type 2-3 characters that then were also deleted automatically.

Whats the problem? Thanks for help.