I can guarantee that they want you to bug every last little bug, but I can also guarantee that most /bus reports are:
"When we fight, sometimes out rifles dissappear"
And that is it, when you bug something, you need to give every detail you can no matter how small to allow them to try and re-create it and look for a solution. To report the invisable rifles, you will need to report where you were, who you were fighting, what abils you used as it happened and stuff.
Also, dont think 'I am not going to report it, someone else would have' because if they aren't getting many reports, it wont be considered higher priority.