Screen flashing when VSCode open and tiled to the far left or right.

Having VSCode open and tiled all the way to either the far left or far right causes the screen to flash. This seems to be tied to the terminal's GPU acceleration because when I turn this setting off, the flashing no longer occurs.

Start by reproducing the flashing with VSCode tiled to the far left and far right, then compare the behavior with the terminal's GPU acceleration disabled. Done means the screen no longer flashes while GPU acceleration remains enabled; no source file or test is identified in the issue.

Written by the indexing model from the issue text.