Either you double clicked the search bar and it doesnt reset (wich is a known bug) or you have journeymap installed (wich tends to mess with all kinds of stuff after some time, also a known bug)
My tip: dont double click the search bar, remove journeymap and install fastcraft and opis for the map.
This helped me out alot since i was having alot of lagg issues after some time ingame yet now i run the pack stable with 250+ fps on a medium automated base
Too bad the twilight forest cant generate on a server atm due to a bug i think.
I did as you suggested and it fixed my problem thank you.