I went into the practice range with my mig-3 and started flying up in the sky. I reached a little over 10000m up in the sky and suddently my plane despawned and i got error messages. When i looked down had a weird view. I made some shots in the right order to capture what happened and if you are interested take a look:
gastanofrizzi , shiivex , knyaz_Iaroslav , padddie , Conscript_Joe , Eloros , TheSaitham , Schmetterwurm … always the same friends answering forum starts to feel like a family here
No you cant! i personally reached map end and see, there was only a couple of meters of vertical ground and there is an invisible wall at lv0 of the ground that kills you instantly
Its a bit scary in its own way.
But it is not really surprising that devs didnt really count at players fighting (or in general, being present ) at such high altitudes, so it makes sense it looks the way it does.