For lifting the edge of trim at work I use this stuff (assuming your trim is still relatively pliable). It works great.
If I can remember at work today, I’ll post a picture of me using the trim masking tape.
Do you remember which clear coat was sprayed on your car that peeled away?
Sometimes there are just bad batches from the factory (pretty rare problem though).
If the painter shooting waited outside of the adhesion limit (usually 24 hours per the manufacturer’s guidelines) it will peel like that. Personally I’ve never waited more than a couple hours to clear a paint job, it makes me nervous precisely because of what happened to you. I trust what the manufacturers say their paint will do to just a certain extent.
Sometimes it’s just cheap paint. Value lines are cheaper for a reason.
I recommended a cheaper priced clear a little while back here. It’s made by Utech. This is an Akzo Nobel subsidiary. It has a lifetime warranty. It lays out beautifully, though you have to move considerably slower while shooting it.
A black paint job is more likely to have issues due to a greater absorption of UV radiation. Though the damage will be a much more subtle peeling issue. It’ll begin delaminating (peeling) earlier than a brighter paint color. You’ll notice the early stages of this when it seems like it’s getting a cloudy/milky look to it.
Post a picture or two of your current problem for me to look at.