Here's a case where SARH missiles (AA-10A and AA-10C) launch instantly and then run blind, despite the target being fully illuminated. (Indian Ocean Brawl, Build 497).
Manually allocating a pair of missiles gives a targeting vector with an 18 second ready time.
However, the first missile launches instantly, gets an illumination vector, but almost immediately starts running blind. When the second missile launches the illumination vector vanishes, the blind time on the first missile resets, and both missiles begin running blind.
When the five second blind time expires the missiles self destruct and the target vector vanishes.
This happens with single missiles as well as with multiple missiles, and with both the AA-10A and AA-10C.
I also tried allocating a gun attack, and then allowing the ready timer to run out before launching the missiles. However, the result was still the same, with a blind launch.
The attached save has the situation before any missiles are allocated.
