So, there are, along with the new version, a few more bugs. Here is a list of how to fix them.
Levels don’t load after beating the first one, also escape doesn’t work to quit the game.
This seems to happen due to the system used to show the Time’s Up screen in timed levels. At the end, the game pauses time, stoping levels to keep going in the background. Although UI elements still work, anything related to timing, for example, the thing that detects how long to wait until the level should load, stops working. To fix it, just restart the game. It should only happen after beating a timed level, and even then I’m pretty sure it’ll still work when you press the restart button.
Achievement for 5 minutes unlocks at the end of 1 minute mode
This is simply because I got the codes for two achievements mixed up. At the end of 1 minute mode, the game is supposed to trigger the achievement for playing for 1 minute, just incase the timer misses it. For now, just leave it, it’ll just mean that you get the achievement without actually doing what you’re supposed to.

Also, just so you know, there is a maximum score you can get it the timed modes, but you’d need to solve them almost instantly. Hopefully we can get a bit of competitiveness between people. Use it as a way to spread the game, say,
“Hey Gary/Fred/Terry/Bob/other generic name, I bet you can’t beat me at Shift!”
“What’s Shift”
“It’s this cool new indie game! The developer is making this up as a crappy advertisement for the game!”
“Cool!”
Bye bye now.