Currently with Fuel Remaining it always shows that in Hr:Mn format while the ETE to Dest will change. It will show Hr:Mn when appropriate but it also does Mn:Sec when appropriate too. There is nothing wrong with the fuel warning system when you don’t have enough fuel to get to your destination, it is inconsistent with the fuel remaining.
Example: ETE to Dest is 10 minutes 30 seconds, fuel remaining is 6 hours (again this is based on current fuel flow, which in turn is based on a lot of things). Fuel remaining will show 06:00 while ETE to Dest will show 10:30. Both displays will still be white but the formatting is inconsistent in my opinion. If I didn’t have miles to distance also in the info bar I would think that I’m 4 hours short on fuel and that there is a glitch with fuel remaining (because it’s not red showing me that I am short).
I think it should be Hr:Min:Sec or just flat out Hr:Min and disregard seconds just to be consistent with what the fuel remaining is telling you.