it looks like 'buy max' in the upgrades tab is attempting to buy each upgrade in order, it'd be a nice change if it bought the cheapest upgrades first, so none get missed. also, it's occasionally purchasing upgrades that i cannot afford- i have no idea what might cause that
edit to add: it's also unusual that the timer keeps ticking up on the endgame screen, if you beat the game while you're away, the timer could be several minutes off by the time you see it.
overall, nice game! not too short, not drawn out too long. getting the automod upgrades for the first time felt really rewarding