Don't forget to state which version you're currently using I was able to replicate this in [1.1.19] by using this setup: Capture.PNG and wading into the largest nests I could spawn on world gen, with shotgun blazing. It's probably a hard limit with the sound handler - too many sounds playing at once...

I'll second this - fresh save shows that, when tossing a grenade, the yellow sweep timer appears. When using the tank's cannon, the sweep timer is a solid white.

As an update, I just went and tested with several different ghosts, and no ghost - it appears to be just an issue with the underground pipe ghosts - whenever I place start and end ghosts for an underground pipe and drag to place it, the start will be placed, and the end skipped in favor of placing a...

When I make a line of underground pipe ghosts, and have a normal pipe behind the end of a underground pipe section, the dragging will skip placing the end of the underground section and place a new underground section start after that end, on top of the regular pipe ghost https://forums.factorio.com...