The peel-and-stick does not go to the ends of the flap. This makes it easy to reopen the envelope and add something that might have been missed the 1st time.
It used to just be intermittent but with the last 3 boxes of envelopes I've purchased they will not feed into the envelope feeder on the printer without coaxing which gets to be annoying when you need to print envelopes all day. Didn't have this issue with name brand envelopes.