On Sat, 3 Nov 2018, Samuel Holland wrote:
In d8ae72427187, start was changed to point to the character under the cursor, instead of the beginning of the cleared area. The offset was correctly applied when clearing the backing buffer, but not when updating the framebuffer region. Fix this by having start point once again to the beginning of the cleared area.
There is already a slightly better fix submitted here:
https://lkml.org/lkml/2018/10/23/535
Nicolas