Cura ignoring/biasing temperature setting?

[lairdb 3]

I'm trying to move from 15.04.6 to 2.x (currently have 2.3 and 2.4 installed); I've been able to print PLA with good results. However, I'm having a terrible time getting my TPU to print with 2.3 or 2.4. Have worked carefully to migrate settings that work very well in 15.04.6, and still getting awful results.

Mystified as to what's going wrong, although it looks a little like under-extrusion, but I am frustrated enough to be opening the GCode files and comparing, and that led me to:

Why is 2.4 setting temperature 5 degrees higher than specified?

(Also, if anybody has hints about why apparently identical 15.04/2.4 profiles are yielding great/horrible results for TPU, that'd be great.))

[ahoeben 560]

There's a new setting called "Initial Layer Temperature" which defaults to the normal temp +5.

Also see https://ultimaker.com/en/community/38321-24-beta-2-nozzle-temperature-bug