I have noticed this issue when testing with 1.28 version.
I built a serie of rooms, all conected, with a bunch of "dormant" dynamic lights.
In a certain moment, the player is able to press a button, and turn on all the lights in a delayed sequence, but when the last lights starts to turn on, the first ones turns off, as if the engine had a limited number of Dynamic Lights on screen.
But the problem does not occurs when the lights are in not-connected rooms, and they can't appear on screen simultaneuos.
Is that a bug or a engine limitation?
P.S. I forgot, salutes all <!-- s:-P --><img src="{SMILIES_PATH}/icon_razz.gif" alt=":-P" title="Razz" /><!-- s:-P -->