mask_matrix invert = T not working

[Wenhe-Lin]

Hi, I was trying to mask a matrix by setting the matrix entries to zero based on zero values in the mask matrix. So, I set invert=T as suggested in the document. But it didnt mask and I got the same matrix as the input matrix. I tried invert=F, and it did mask based on non-zero values in the mask. So, I assume the input has no issue. Could you help me look into this? Thank you so much!

[Wenhe-Lin]

here is an example of my masking
mask_matrix(mtx, mtx>1, invert=T)

as invert=F works well, so i thought about achieving the same goal by just flipping the direction of the mask as below
mask_matrix(mtx, mtx<1, invert=F)

however i got this error: matrix < numeric not supported for IterableMatrix objects
i'm curious why > works but < doesnt. is there any way to do it without converting to dgCMatrix as my matrix is pretty large