Hi!
I've used Tamya lacquer countless times (clear or candies) over Testor's One coat, to no ill effect. However, once, I got this wrinkling using just one coat of TS-13 Tamya's clear over a fully cured coat of Tamya's own (!?!) acrylic flat white. I was surprised, as it never happened before, and never ever since.
Of course, most of us know that if you use TS-13 clear to your satisfaction on a part, let it cure a few days, and try to coat it AGAIN with said TS-13 within 30 days... you will likely have crazing. Many magazine writers wrote about that, and I saw it once on a project.
CT