Wrongly sustained long tones

I have a score (full concert band instrumentation) and there are sections where I head a low note/chord just droning on for measures and measures past where the actual note ends. It’s nothing with my notation (I don’t think), everything looks right, but the playback just gets messed up bc of this. Any feedback would be helpful. https://musescore.com/user/57656708/scores/21464383?share=copy_link
There’s the link for the score