Would you be worried?

[Delphinus]

Worried, no. Annoyed, maybe Just because I know I would be fixated on those bubbles and probably obsess over it like I would any imperfection.

But at 10mm thick, that's some serious contact for the glass. It's not coming undone. Actually it's not uncommon to see seams like that with thicker glass, it's hard to get it perfectly uniform. The silicone in between the contact points of the glass is structural, the corner bead outside of the contact points is the leak prevention. If you get a tank resealed for example, (except for maybe in the more extreme cases) usually they don't pull the glass apart and redo the whole thing, usually they just scrape the corner bead out and reapply that.