Teleports buggy

Hi, my map has a spawnable waygate that uses an ability to set its destination. After a while, units stop travelling through the waygate, and instead walk towards the waygate's destination. Is there any way to fix this? It can be temporarily fixed by making another waygate, but I'd still like to know a solution.

We need more infomation, does it do it everytime? how many times does it take for it to start bugging like that? etc.
We cant just guess.

For example, today I had made one, and after a few minutes (5-10), it just started making the units walk to the destination instead of teleporting. I did nothing special to the waygate after making it, and the units going through it did not change.

I thought this was a pretty widespread problem, it has happened to me before in other maps, as well as to other people.

Do you ever move or alter the target region of the waygate?

In my map, the destination for the waygate is set with an ability. Yes, it can be moved, but I didn't move it when this bug happened. What I did was created the new waygate, used the ability to set the destination, and kept it like that.

Yeah i've seen it before. The unit runs to the waygate, and when it reaches the waygate it randomly has an order to walk to the destination instead of teleporting.