Weird Texture Pattern on Tri-X 400 using Monobath

I did my first roll of Tri-X using the AGO and Cinestill Monobath (6-minutes). The entire film strip has a weird texture on it. See picture.

Any clue what causes this? I’ve done many rolls of Ilford HP5 with no problems. This is my first Tri-X.

Looks like wrinkle grain that one can get depending on how film is developed, specially regarding differences in temperature between steps. Runzelkorn – Wikipedia

Wrinkle grain can be considered a development fault or a graphic effect.

To me it looks like reticulation.
Usually that is seen only with large swings in temperature. Did your process temps change during development?
Was the film at room temperature when you started development?

I did everything I normally do:
-Developer at about 78F
-Room Temp about 75F
-Rinsewater just “warm” not hot or cold. Lukewarm?

Now here’s the questionable part: Looking at the mono bath instruction sheet for ISO 400, it seemed that the develop time should be “2X Min” which I interpreted as 6 minutes. Was that correct?

That is strange. I’m not familiar with that developer, but reading the instructions it seems that you did it correctly.
I don’t have any other idea except for bad film or something in the developer not being correct.