Recently, we had a few double-pane windows replaced by the window
manufacturer.

They used double-sided tape to keep the windows in place within the
plastic frames.

Issue: For all of the windows they installed, there are areas of the
double-sided tape that have separated from the window or from the
window-frame. The issue ranges from 5% of the tape to 100% of the
tape.

Question: Does anyone who has any experience with this subject know
whether or not this is an acceptable solution?

Meaning, is it normal to have areas of the double-sided tape separate
from the window or the window-frame? Is 5% separation acceptable?

I have one window that where all of the tape has failed, and the window
manufacturer is coming in next week to re-tape it. For all of the
other windows, I'm going to ask that they retape them, but I just want
to check to make sure I'm being reasonable

Im sure it is not the way they were originaly done.