A rendering issue is present where if a tool has been set to replace mode (e.g. chisel) and one tries to place down a structure from a blueprint that has a rotation axis e.g. an Axis Door.

It is also impossible to place down the structure while replace mode is still on. (Not sure if this is a feature or bug)

version LittleTiles_BETA_v1.6.0-pre100_mc1.20.1

Fixed in the newest version. Thanks for reporting this issue and taking the time to provide screenshots!