Anyone ran into bubbling tint around the window along the gasket?

had my tint done at a reputable and highly recommended tint shop and noticed this on my rear driver's side window. the outline follows the window frame gasket perfectly. no issues with the other three windows done. I emailed the shop and he said he couldn't see it... and to bring it in for inspection. I'm sure it'll be covered by their warranty but curious if anyone else has ran into this issue.