you can not open any mekanism block ui when world parallelisation is enabled it will just close the UI when you try to open it there is no error on client or server none i could find any way

SERVER: debug-1 (3).log

CLIENT: debug.log

due to this bug i had to disable mcmt. i can't test till this is fixed ... at least on a live server
i think i managed to filter create so i can enable te. to fix this issue i had to disable entity and world