Custom Page layout and related tmp files causing issues

Question

Hello,
I am trying to create custom page layouts using Design Manager and then editing the html file using a text editor.
I have created a content type (inherited from Page content type) and used this content type for my page layout. I used the snippet manager to add relevant webpart zones and snippets I needed and published the page layout. Under status it shows conversion
successful but I can see another file with similar name to my page laout but with ~RF119c862.TMP being created. 
Even if I publish my page layout my webparts (via snippets I added) doesn't reflect in the page. I checked the preview of my page layouts and webparts appear when it is in draft mode but the moment I publish it loses all snippets (webparts). 
I checked the html even after the page layout is published and I can see all webpart zones, my divs and snippet code there, somehow once I publish it the corresponding aspx page doesn't get updated.
Has anybody come across this before, I'm trying this on Office 365 tenant site.
Regards,
Manoj
-- The opinions expressed here represent my own and not those of anybody else -- http://manojvnair.blogspot.com

Answer 1

I have seen a similar problem on-prem when a client had distributed cache misconfigured, but as your problem is with SPO, I doubt that is the problem.
Try creating another page layout but keep its associated content type untouched. Try adding snippets and such, publish and see what happens. If that works, then there must be something wrong with your custom content type.
Also, when you save a change to your .html page layout, open its associated aspx page layout in SPD and see if your changes were reflected there as well. As soon as your edit a html page layout and save your changes, SharePoint should automatically update
your aspx page layout right away.
Eric Overfield - PixelMill -
blog.pixelmill.com/ericoverfield -
@EricOverfield