They say new additions to TPT arent allowed to break saves... yet the new update that makes sponge no longer movable breaks a few great saves... like "forlockheedmartin" the rocket save that topped FP for a week!
I was personally against the fix that allowed saves from older versions to preserve that glitch artificially, actually. There is a limit to how awesome reverse compatibility can be.
..Also, the default front page time is exactly one week >.>
This glitch was in the game so long that it wasn't really a glitch any more. I don't know why it wasn't fixed as soon as it was discovered, it's only caused by tpt.el.spng.loss being 1 instead of 0 I think, which is a simple fix for something that didn't have much use then. In the end, maybe it should have stayed though. It was fixed because of a glitch with GEL, but the GEL glitch was later fixed and the SPNG glitch wasn't brought back even though it didn't matter anymore.