It's about the timing, press the air at the same time as jump, then press jump again in mid air(while always holding the air with other hand), if the elytra activates then you will shoot forward
this problem also happened to me, I think it is the cobblestone, just replace the torches
It's about the timing, press the air at the same time as jump, then press jump again in mid air(while always holding the air with other hand), if the elytra activates then you will shoot forward