Impossible to paste passwords from iphone ios to apple watch

when trying to login to icloud on apple watch, if you have a long secure password it’s impossible to login.

You can not paste the password from your ios iphone in to your apple watch.

If you copy the password on the iphone and attempt to paste to the apple watch, even with the box that pops up on the iphone it will not paste.

for people with long or secure passwords this is a total nightmare.

help