Clips joining arrows in timeline are not showing.

The marks are not showing which we see when extending a clip or joining two clips that the two clips are now joined or any further dragging will overlap or shorten the first clip.
Even when we extend a clip to cursor in the timeline and the clip auto attaches to the cursor so that we won't pass by the cursor. That action is also not happening. I am using Davinci Resolve 15 Beta 2.
Right now when I drag a clip close to the second one, then instead of just joining the first clip starts to get shortened.
Even when we extend a clip to cursor in the timeline and the clip auto attaches to the cursor so that we won't pass by the cursor. That action is also not happening. I am using Davinci Resolve 15 Beta 2.
Right now when I drag a clip close to the second one, then instead of just joining the first clip starts to get shortened.