GeoGebra Classic 5 does not open its old documents in Ventura 13.3
FYI and for the record: After macOS 13.2 -> 13.3 update I noticed that some (not all) my old GeoGebra Classic 5 (up to current 5-0-766-0) saved .ggb files open only as blank documents.
Re-installing GeoGebra Classic 5 did not help. But opening the offending files in macOS 13.2 is still OK.
...I recently noticed that GeoGebra Classic 5 freezes with its 3D projects (Mac mini 2018) so I have already switched to GeoGebra Classic 6 to handle those.
But I dislike v6 cloud-based approach. v5 can open local .ggb files just by double-clicking while v6 requires a non-Mac-like detour to several dialogs to get the same result (also saving as local .ggb is clumsy).
On the other hand, v6 has some neat GUI elements to enter and display mathematical equations so maybe I just bite the bullet and move on with v6...
...v6 opens those old documents but some elements (like my freely typed info text with "> " prefix) do not display correctly the same way as they did in v5...