Lightsaber Blade works in one Saber but not others?

Two years ago, I bought Kylo Ren’s legacy saber and a blade. More recently, I bought Luke’s saber and Anakin’s padawan saber. I interchange the blade I bought two years ago across all three sabers.

Today, I noticed my Kylo Ren saber flickered when I turned it on so I changed the batteries. All seemed well until tonight when I turned it on again and it seemed to flicker like before. I took the saber out and when I put it back in it didn’t make the click-in noise. I put it into Anakin’s and again, no click noise. Weirdly, I put it into Luke’s and it lights up fine. I already changed the batteries in the Kylo saber, and Anakin’s is brand new so the batteries should be decent in there.

Has anyone experienced anything like this? I’m going to let them sit tonight before trying anything else but how can this make sense? Why would a blade work with one saber and not the others?