It's quite common for one service to depend on another (or multiple others), on the network/firewall state, on configurations that might affect or be affected by other services, etc.

What looks simple when you're the king of your own little kingdom suddenly doesn't seem as simple when that fantasy meets the reality of sharing the world with others.

Same reason clocks shouldn't jump backwards, it breaks so many assumptions you end up with insanity. Do a revert commit so it's the old code in new clothing.