Diagnostic build for issue #304 (scene clipped to the top half on some older iPads). Not a general update: it deliberately sorts below the beta series, so HACS won't offer it to other testers.
To install: enable beta versions for Helios in HACS, pick this exact version, then hard-refresh the dashboard.
It adds a magenta DIAG button at the top-left of the card. Tap it and a readout appears at the top (GPU, max texture size, pixel ratio, layer sizes). Please screenshot that panel.