Syndicate missions disappear when climbing up from negative reputation

[Sannidor]

My elaborated guess is, this happens if syndicate mission from higher tier is placed on a node already cleared with lower tier mission in a 24 h period.

However, I noticed these missions sometimes briefly appear and if chosen are fully functional - giving reputation and spawning medallions, but just for a tiny time window.

AFAIK, this does not happen for new players who move upwards the tiers for the first time. 

I understand that with balancing stacked medallions there could be abuse of repeating specific tier missions but simple daily restriction of three missions per tier should be enough.

The way it is now I only see it as bugged and inconsistent.

Please consider taking a closer look at this feature, thanks.