we are experiencing this problem on multiple websites in the past few weeks, for one of our customers we disabled the integration (they have less then 100 active item at the same time)
another customer have the same problem but in this case we cannot disable the integration.
I checked other posts and we dont have multiple initialization in that page (we have the initialization in the webflow generic custom code for the header)
And on another note! I noticed there are two different lists on each tab. Remember that CMS Load requires you to define instances when loading multiple lists following the structure below.