As summary suggests. please follow steps. Reproducible: Always Steps to Reproduce: 1. Draw something on a layer 2. Add a transform mask to this layer 3. In the transform tool option select cage, draw and edit cage 4. Toggle the transform visibility mask layer off 5. Turn it back on and try to edit the same cage you previously created at this point the previously drawn cage does not reappear, instead it behaves as if you are creating a new cage.
Confirmed for desktop 2.9.5. Also when toggling transform mask visibility after the cage transformation, the layer is invisible while transform mask is visible.
*** This bug has been marked as a duplicate of bug 332386 ***