Twilight of Arnor v2.02.030
There is a reproducable bug with surveying.
It happens when a survey vessel hits an anomaly off screen. That means, when the ship operates in hyperspeed mode, zipping to the destination instead of actually "playing out" the movement.
When a survey vessel then hits a research anomaly (add 25% to currently researched tech), the research points are not added. This is not just a display issue.
The research bar does not update on the next turn or when the displayed weeks update "normally". This is not just a display update issue. The points are simply not being allocated.
Of course, this could also be affecting other anomaly effects but this one is the easiest to reproduce since the tech display is visible on the main screen.