In Sins: Rebellion (all DLCs):

I have a gas giant (Apollo) with a Phase Stabilizer, put there using my Vorastra Titan's Deploy Phase Stabilizer, but the gas giant isn't marked as a Phase Stabilizer Node, and I can't jump to or from it directly to/from other Phase Stabilizer Nodes. 

My guess is that this was because I deployed two PSs with my titan, and then one got destroyed. I believe back when I had both in the gravity well, Apollo was a Phase Stabilizer Node.

The remaining PS doesn't have any red "Abilities Disabled" text or such on it. It's been several hours of game time since I noticed this (and several save/load cycles), and it hasn't fixed itself. All the other PSs I deployed from my Titan seem to be working normally.

I attached some save files to bug VLK-767-69940 but they closed the bug and said I needed to post here, and I don't see a way to attach files here.