I get this bug not when using blueprint aligner, but just when i am holding a (rail) blueprint? I think i used blueprint aligner to create the blueprint but it was long ago.
The mod Blueprint aligner (1.1.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event blueprint-align::blueprint-align__input__move-grid-left (ID 250)
Item is not blueprint.
stack traceback:
[C]: in function 'index'
__blueprint-align/control.lua:107: in function 'move_blueprint_grid'
blueprint-align/control.lua:201: in function <blueprint-align/control.lua:199>