7 - 13 Upgrade RTE and Content Picker causing JS memory leak

[river tendon]

umbraco Failed to execute 'getComputedStyle' on 'Window': parameter 1 is not of type 'Element'

I fixed a previous error by making all the groups tabs again which was failing on the if in the code snippet below but now the getComuptedStyle errors with the above

                    if (node instanceof DocumentFragment)
                        return !0;
                    nodeComputedStyle = this.doc.defaultView.getComputedStyle(node)
                }```

code is from /umbraco/js/umbraco.services.min.js?d=638557656950000000