The Web App can create 64 character passwords but the iOS app can only support 50 (I haven't checked the Mac app but I believe in the past this was also limited to 50).
Could these things please be aligned for a consistent experience? Preferably the longer the better! 256 FTW :-)
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided