Basically story goes like this:

1. I played Vodyani

2. Used my fleet to capture (after ground combat) some system 

3. The new sign apeared on the system showing that it will be my "hunting grounds" for X turns and that if system colonized the structures and population will remain.

4. Brought and ancored Ark to that system.

As result got two bugs:

a. The "hunting grounds" counter stopped forever, sign did not disapeared, as time pass it shows same number of turns.

b. I had to build system "anew" despite the fact that counter not elapsed system contained 0 buildings.

Reproducable 100% , got same behavior each time in each system captured this way.

Hello :)

Could you please upload your saves and Dignostics please?

That'd help us investigate and resolve the issue!

Thank you for your help :)

The bug is really easily reproducable, just follow my steps above.

\But if you wish I will upload the save demonstating it, please check planet called "Zainess" . in the attached save game - no matter how much you hit "Next turn" the numbers on the "hunting grounds" icon tooltip stay the same and the icon itself does not disappear. Still same "it will disappear in 6 turns" (o population & 6 buildings)" .

test.zip

Yep alright, I reproduced the issue :)

Thank you for reporting!

So as Vodyani, what is "supposed" to happen in that situation?  It is my first time playing them.