I updated all the mods after a long weekend, and something broke either in Tahlan, or in Tahlan+GraphicsLib.
The Izanami special ability combined with its Atrapos Lances started causing graphical glitches. After the first use of Chrono Rupture while Atrapos is firing, the ship usually turns black, every Atrapos shot turns into a black "shadow" that hides effects, and all shield effects disappear for all ships for the rest of the battle. Venting shows the Izanami again, but then it's back to black.
Tried disabling everything but the shaders in GraphicsLib, but it did not help. It does not matter what other ships are in a battle. 1 on 1 in simulation also brings out this bug.