I've the same problem and i found out that the problem occurs when the window of pantheon-files is very large (approximately over 75% of the screen)...then you can't tile it half the screen. When i will make the window smaller...it works like it should.
I've the same problem and i found out that the problem occurs when the window of pantheon-files is very large (approximately over 75% of the screen)...then you can't tile it half the screen. When i will make the window smaller...it works like it should.