Exactly. It befell the same fate as the first Fullmetal Alchemist series, complete with an insane ending that was improvised and duct-taped to the end of an otherwise perfect series. At least they had enough wisdom to soft-reboot it, so they could finish the series the same way the manga did.

Dragonball Z also gets an honorable mention here, where the animation team was constantly at risk of getting ahead of the manga, so they had to build in LOTS of filler episodes to buy time.