Issues when selecting a string to bind with the scrolling menu

It appears that when there are too much ST_ in the editor, we have difficulty to select them with the scrolling menu. In my case, 95% of time I haven’t the focus on the scrolling menu and I just cannot select a string to use. You can check the SS to see that. Some other people on this project haven’t this issues. Deleting ST_ to have less is a workarround for me.
Do you have any idea what i should change to fix this. Because we don’t all have this issue. I will also try to delete my entire project and reupdate everything to see. I also restart PC but it didn’t solve the issue.