Temperature gauges not showing properly

[Thanny]

I found this while trying to aerobrake under 40km from the Mun (which worked fine before 1.03/04, but doesn't now). My Goo canisters (and other bits afterwards) were exploding with no indication of heating at all (no gauges, no color difference on temperature overlay). Though while explosions were happening, I did see flashes of temperature gauges. And the gauges also do show very briefly when switching between map and ship view.

The upshot is, you can't see when parts are overheating.

Update: You can make the gauges flash briefly by pressing F10 twice to toggle visibility off and on again.

Edited June 30, 2015 by Thanny