Well thanks! But sadly this still isnt it. I tweaked it to show the issue.
First tab has nothing and is the default tab.
Click the save button to validate the form no errors are displayed but it should because there are errors in the other tabs.
Now click all the tabs(I enabled keep-alive so they dont disappear from the dom) and then click save. All the errors are counted.
The hack I did for now (not shown here) is to visit all the tabs on load, that’s 8 tabs in a series of nextTick calls.