farmlands and grass path push you when you step on them

I have created a world in 1.16 pre release 1 and continewed to play till pre release 5 without any problems,untill I realised that I cannot walk on to farmland block and to grass path bock unless I quickly jump while walking on these. As soon as I walk on these I get pushed back and I cant move using WSAD unless I jump. Please fix this bug cause I keep falling of edges and I cant collect my crops. Thanks in advance!!!