ChangeWorld function problem

Hello. I'm making a script in Simba for OSRS and there's a part where I need to use ChangeWorld function. But when I use it, for example ChangeWorld(306), it sometimes doesn't click on the specified world, but misses it and clicks on the blank space between world 307 and 306. After that, it waits for about 5 seconds, clicks "cancel" and logs back to the current world. Sometimes it even changes to world 307 instead of 306. Same thing is happening with ChangeWorld(RandomWorld).

I don't really feel like making my own function for changing worlds, so any help on how to fix this problem would be appreciated.