@Anshu kumar I maybe found the problem. It seems that on mac the clipboards are accidentally reversed. Mac has a hidden clipboard wich you can use with 'control+K' to cut an 'control+Y' to paste. But when I select some text witch I cant copy over the common ways, and then press 'control+K' tu cut it with the hidden mac clipboard, the password are passtet in the main clipboard and I can paste it over the 'command+V' buttons, instead of the 'control+Y' buttons.
So for everyone who is struggling with this. Simply edit your entry and set your passwords to text fields, select the chars with t