[2.1.9] Reverse rotation fails on object previews with limited valid rotations

[Randymations]

For objects with a limited number of valid rotations (e.g. Train stop and Offshore pump), rotating the preview of the object should skip invalid rotations. This occurs successfully when rotating "forward" or clockwise (R on default controls). When rotating in "reverse" or counterclockwise (Shift + R on default controls), the object preview fails to skip the invalid position and instead does not rotate. The expected behavior mirrors the clockwise behavior and skips the invalid rotation.

Rail signals and Rail chain signals fail to reverse rotate at all under any circumstances.

This gif demonstrates the issue. In each valid Train stop position, the object preview is first rotated clockwise successfully, then rotated counterclockwise where it gets "stuck". This behavior is consistent in all permutations of the scenario including two parallel rails (not pictured). Also shown is consistent behavior with the Offshore pump. Although not all permutations are shown, behavior is consistent. Also not pictured are Rail signals or Rail chain signals which show no reaction when attempting to reverse rotate.

Bug.gif (18.68 MiB) Viewed 233 times

This issue is not related to Shift also being bound to ghost placement as it occurs even when binding a dedicated key to reverse rotation.

This is admittedly a partial duplicate of 108635 but I have attempted to generalize the issue and demonstrate that it still occurs on the current version.

[Rseding91]

Thanks for the report. This is now fixed for the next release.