Rocket Loader not adding Type attribute to bigger files

Suddenly on one-page JavaScript was breaking. After extensive checking and if found that on the page where js was breaking, the type attribute is not added for js files. Example below

<script src="/assets/vendor/js/bootstrap.js"></script>
<script src="/assets/vendor/js/sidenav.js"></script>

But other pages do have the type attribute

<script src="/assets/vendor/js/bootstrap.js" type="151266feb6702223b099e35a-text/javascript"></script>
<script src="/assets/vendor/js/sidenav.js" type="151266feb6702223b099e35a-text/javascript"></script>

Later I also noticed that the type attribute is not added if server send more json code to the page. If I limit, so less json code is sent to hte page it all works, and the type attribute is added, but if page receives more json it breaks and the type attr is not added, in addition I see these errors in console:

rocket-loader.min.js:1 Uncaught TypeError: I is not a constructor
    at l (rocket-loader.min.js:1)
    at t.simulateStateBeforeDeferScriptsActivation (rocket-loader.min.js:1)
    at P (rocket-loader.min.js:1)
    at Object.callback (rocket-loader.min.js:1)
    at (rocket-loader.min.js:1)
    at rocket-loader.min.js:1
    at HTMLScriptElement.<anonymous> (rocket-loader.min.js:1)

Any thoughts why it is happening? The page with error is accessible only for logged in users, therefore I cannot share the link now.

Ok, so I disabled the Rocket Loader and it works.
Visually I don’t see any speed / "initial paintdifferences, but still, would be nice to know how to have theRocket Loader` ON and still work if bigger page sizes (more json).

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