With wmf.25, AbuseFilter blocks stopped working. For example, see AbuseLog on it.wiki. This is surely related to https://gerrit.wikimedia.org/r/#/c/412892/. I noticed that the new blocks (ones with custom duration) do work, while the old ones don't. It's surely due to some backward compatibility bug which however I won't be able to investigate before tomorrow.
Trouble probably found: those lines miss a declaration for global variables wgAbuseFilterBlockDuration and wgAbuseFilterAnonBlockDuration. I'd be relieved if someone may test and merge it if necessary. I'm sorry but right now I'm writing from mobile and have no way to do it.