Help with a very strange bug after Cura version 5.1.1: the design is a simple block (block.jpg attached). Slicing with 25% infill in the new 5.3 gives the preview shown in block2.jpg: not the same block at all. The picture at a lower layer (block3.jpg) confirms it is not the right sliced version of the original design.
Now, using Cura 5.1.1 (the last version not showing the bug described above), picture block4.jpg shown the right sliced block. Pictures at 2 lower layers (block5 and block6) show how a right sliced design should be.
The problem does not replicate on my second PC. What could this be ?
Many thanks.