WalkWhileBreaking not activating when using #sel ca or #sel replace, and getting stuck partially mining the same block over and over

Hi, having issues getting stuck repeatedly mining a block partially over and over while using #sel ca or #sel replace. My character stands still and refuses to recalculate and gets stuck mining the same block for multiple minutes. My character walks fine with WalkWhileBreaking turned on while using #mine or #tunnel. I've tried adjusting BlockBreakSpeed, BlockReachDistance, FreeLook, SmoothLook and all of the layer toggles and LegitMine ones, as well as the Meteor Packet Mine toggle. I'm baffled because like I said, no issues when using other commands, it just seems like WalkWhileBreaking does not activate with these particular sel clearing commands. This happens with or without tools equipped also. I am running the 1.21.11 version. Thanks for your help!