Change Details

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.48 **Blender Version** Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-01 14:06, hash: `rB60741cfe181c` Worked: (newest version of Blender that worked as expected) **Short description of error** In the new multires, if I sculpt on a level, then subdivide, sculpt on that layer again, then undo to the base level and redo back to the higher levels, it creates a pointy mess in the place of where I'd sculpted. {F8506501} {F8506511} **Exact steps for others to reproduce the error** 1. Start from a sphere (provided in the blend file) 2. Add a multires modifier and create a few subdivision levels. 3. Sculpt on those levels and undo back to the lowest level. 4. Redo back to the higher levels.

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.48 **Blender Version** Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-01 14:06, hash: `rB60741cfe181c` Worked: (newest version of Blender that worked as expected) **Short description of error** In the new multires, if I sculpt on a level, then subdivide, sculpt on that layer again, then undo to the base level and redo back to the higher levels, it creates a pointy mess in the place of where I'd sculpted. {F8506501} {F8506511} **Exact steps for others to reproduce the error** 1. Remove default cube, add UV sphere. Go to sculpting workspace. 2. Add a multires modifier and create a few subdivision levels. 3. Sculpt on those levels and undo back to the lowest level. 4. Redo back to the higher levels. Some of those steps would have pointy shapes.

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.48 **Blender Version** Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-01 14:06, hash: `rB60741cfe181c` Worked: (newest version of Blender that worked as expected) **Short description of error** In the new multires, if I sculpt on a level, then subdivide, sculpt on that layer again, then undo to the base level and redo back to the higher levels, it creates a pointy mess in the place of where I'd sculpted. {F8506501} {F8506511} **Exact steps for others to reproduce the error** 1. Start from aRemove default cube, add UV sphere (provided in the blend file). Go to sculpting workspace. 2. Add a multires modifier and create a few subdivision levels. 3. Sculpt on those levels and undo back to the lowest level. 4. Redo back to the higher levels. Some of those steps would have pointy shapes.