Sounds like an issue where another plugin is loading js scripts inappropriately in other plugins pages. Try this > go to the BPS Pro Setup menu > UI|UX Options > Script|Style Loader Filter (SLF) In BPS Plugin Pages > change to SLF Off.
Maybe BPS is not causing this problem. Deactivate the BPS Pro plugin. Is the problem still occurring? Then do the same thing with the rest of your plugins. Doing this will also tell you which plugin is creating the arrow.