I'm having a similar or perhaps the same issue with pixelated/stretched texture patches. If I texture the mesh as it comes out of processing, everything works ok, but if I do any kind of post-processing on the mesh, the texture presents random patches of pixelated/stretched texture. I've seen this behaviour both for models that were exported, modified in third party software (sculpting, fixing non-manifold geometries, holes closing, etc.), imported back to Metashape and trying to rebuild the texture (Generic, Images, 16k, Mosaic); and for models with meshes that were refined, smoothed or otherwise post-processed within Metashape. The issue started in version 1.7.4 no matter what build, and I tested both on v.13028 and the previous one (don't recall number, but it came out in early August). I believe it has to do with some error during the parameterization of the texture atlas and I'm guessing it mistakenly reserves a very small space on the UV for a larger area on the mesh (I opened the UVs in Blender and verified that this is the case - very small areas that get stretched and pixelated because they apply to a large area). The software behaves entirely randomly and every time the patch/patches is/are different both in size, number and location. I've tried it on two objects, two to three times each for each version, and getting consistently pixelated/stretched patches in the texture. I rolled back to 1.7.1 and the issue seems to go away.
Topic: 1.7.4 update flaws in texture and texture missing on file reopen (Read 6540 times)
