This will need backporting to older VTK releases on ubuntu's where libexpat1's fixes have been backported, which if I'm reading the ubuntu package release dates correctly is Jammy(security, updates), Mantic (security, updates) and potentially Noble (release).
VTK has been patched upstream to correctly handle AppendedData elements in .vtu files with the updated/patched libexpat1:
https:/ /gitlab. kitware. com/vtk/ vtk/-/commit/ db8f9efca220c9d 16a30958e179aba e3379d0011
https:/ /gitlab. kitware. com/vtk/ vtk/-/issues/ 19258
This will need backporting to older VTK releases on ubuntu's where libexpat1's fixes have been backported, which if I'm reading the ubuntu package release dates correctly is Jammy(security, updates), Mantic (security, updates) and potentially Noble (release).