Thanks for your patience. I would like to inform you that this has been addressed. This seems to be a bug in C5 wherein the custom templates are being loaded even though it isn't required by a page.
Cheers,
JZ
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I'll take a look into this and get back to you shortly.
EDIT
We are still investigating this, it looks like a bug in 5.5.2 version. We will update you through this thread once it's done.
JZ