GEGL cubism allocates linear buffers the size of source buffer extent
While applying GEGL cubism in a new image with a simple gradient, I get the following in the preview ...
gimp-2.10: fatal error: Segmentation fault ../sysdeps/unix/sysv/linux/read.c: No such file or directory.
I'm always in #gimp in case you want more details. Easy to duplicate with 8-bit or 16-bit integer RGB images.
To upload designs, you'll need to enable LFS. More information