well, when creating openPGP keys with kleopatra I did not see any hints. I do not think that the issue would be vaild for password based encryption. There the common usecase is autogeneration, anyway

also, in the recipient tab the "encrypt with passphrase" option is at the very bottom and so far away from the other options that it is easily overlooked, if the window is fullsized.

it seems to be a GnuPG-VSD packaging issue, then

Its an issue of cursor position. If one either deletes or inputs a a character anywhere in the password string, the cursor always jumps to the end of the string.