The bug: it seems like Chronoshifters don't properly detect that a summoned creature is hostile, and will merrily haste a minion of yours that's about to kill them.

I looked through the changelog, and it doesn't seem that this has been fixed so far.

Here's what leads me to believe this is the case:

In 1.0, I was playing around with Summon. The first two times I tried it things ended badly (at least now I know to summon things out of mote-explosion range...), but the third time I got an awesomesauce razor fiend. One of the first things it killed for me was a Chronoshifter.

I was confused as this happened, because for some reason the Chronoshifter kept on hasting my fiend. I didn't mind, but I thought this was odd; I figured at the time that Chronoshifters just randomly shot out haste or slow.

However, just now I was killed by a blindingly fast Ichor Worm that was living in the same room as a Chronoshifter. I noticed that the Shifter kept on hasting it, and I realized that this was their expected behavior - they haste other enemies in order to make your life more miserable.

The only problem is that they might not be able to detect if a mob is hostile to them.

Yeah, I'm betting the AI's not checking for that. Good catch.

I've had a Chronomage Haste me once. I figured it was just a quirk of too much time-bending.

Actually, I had a cronomaster haste AND slow me at the same time. Multiple times. Shouldn't those spells cancel out eachother?

EDIT: This happened to me with astromancers too.