Trapped chests closing too quickly when activated from moving minecart

I use trapped chests to activate my minecart switches and signals. These can be activated fairly accurately from a moving minecart and this allows me switch destinations on the fly. Previous to the current version these chests would remain open about a half second and would output a redstone signal that my flipflop used to switch the tracks. Now the chest remain open only only very briefly (1/10 second?) and does not output a signal. System still works normally if activated from a standstill but that is not what I built it for. This has broken my entire transit system.