Is this stem rot? x-section photo
So have had this plumeria for 5+ years since it was a tiny little stick over a few moves, it finally bloomed last summer (currently reside in Portland, OR). As per usual each winter lost it's leaves this winter. Coming into spring had (what I thought was?) black tip (first photo) so I cut it back. It would start to grow back/heal but stayed soft. Now after pieces keep feeling soft I've tried to cut it back before the whole plant dies :( Figured I should doublecheck to make sure it IS stem rot though and not something else. Apologize the photo is blurry, phone wouldn't focus up close.
It still looks brown where I just cut it and it didn't ooze the milky white fluid, so not sure what's up. Keep cutting? Something else?