In the late 1990s/early 2000s, I used TWM because it was light weight, and easily customizable to have 1 px borders on windows (and no bar at the top) to maximi

In the late 1990s/early 2000s, I used TWM because it was light weight, and easily customizable to have 1 px borders on windows (and no bar at the top) to maximize my screen real estate. Java Swing and TWM interacted poorly, so when LimeWire started up, the window would shrink to 3 px by 3 px. Luckily, the redraw was just slow enough that if I paid attention, it didn't take very long to find the tiny window and drag it back to a reasonable size.