When a ship comes out of Overhaul with no orders, they are limited to 1 km/sec even if you advance time—until you actually give them a move order and advance time, at which point they are set to their normal max speed.
This means that when you give your initial orders to a ship that finished overhaul, the "Travel Time Required" is calculated based on the 1km/sec speed, resulting in estimates like these for 19 thousand days of travel time (note the comma!):
I don't think it's a bug. Let me rephrase is a missing bit:
So in Aurora VB6 you were able to set the speed something I cannot find currently in Aurora C#. There is though a Flagging option to Use maximum speed.
So what is happening now is that your ship is coming out of Overhaul at 1kms speed (you can see it at your 3rd line in the screenshot provided) and as soon as you issue the order the ship will reach max speed and adjust the ETA accordingly. So, for instance, this is absolutely perfect.
How to fix: Either you find (and if there isn't we add it) the set speed and adjust it manually so that you'll be able to actually see the current ETA based on the speed you require or Steve will have to ensure that every ship coming out of overhaul are going to be set at max speed by default.
EDIT: Actually there is, see attached. Just set the speed manually. The getting out of overhaul with full speed could be considered a QOL then rather than a bug.
It's a bug. My fleet is set to "Use Maximum Speed", yet it doesn't when it comes out of overhaul, even if you move time intervals forward. It stays at 1km/sec as described in the bug report until it receives a movement order and time is progressed. This bug further causes a completely wrong Travel Time Required to be shown.
It's working as "programmed", yes, but surely not as designed.
I cannot replicate. I mean I do get 1km/s and The use Maximum speed is to ensure the ship going to max speed when you issue an order. However, when my ship is out of overhaul I click on the set speed button, I set it to the max I have for that ship (2000km/s) and it's all good. the only problem I see is that it doesn't update in real-time but you have to close and reopen the screen to get the right calculation.
It used to be like that in VB6 too (but I am sure calculation were in real-time) if you had a problem with your ship set the speed of 1km/s or if you merge to another fleet using the max speed of the slower ship. All the times you had to remember to max the speed as well.
I do agree ships should come out of overhaul to get Max Speed as default, just not sure if it's a bug or it's just working like that.