Sitemap sometimes disappearing

I cannot reproduce this. Please install the dev version of the module and explain step-by-step how to reproduce the issue. Please also mention what a broken sitemap looks like.

Hello all. d8.1.1 and Simple XML Sitemap 8.x-2.2 here.

I also have the "Sitemap sometimes disappearing" issue ocurring, but I cannot tell you how to reproduce the issue except to say that the issue appears to occur only when "Regenerate the sitemap on every cron run" is enabled (checked). This setting is located at: /admin/config/search/simplesitemap.

When "Regenerate the sitemap on every cron run" is enabled the contents of my sitemap.xml file becomes empty every 24 to 48 hours, and appears as shown in the code tags below...

<urlset>
  <url>
    <loc>http://www.MyDomain.com/</loc>
      <priority>1.0</priority>
    </url>
</urlset>

...and is reported by Google as being "empty" as shown below...

http://www.stonetonwestllc.com/sites/default/files/google-sitemap-error.jpg

However, when I disable (uncheck) "Regenerate the sitemap on every cron run" the issue is no longer present and my sitemap.xml files lives a healthy life. For example my d8.1.1 Status Report states that "The XML sitemap was generated 6 days 7 hours ago."

I apologize for not being able to provide reproduction steps other than the information I've provided above.

Thanks for your help.

Q

Not "critical" because one can run in "manual mode" as a work around.

This should be fixed in the latest dev. Please do tell if you catch the sitemap in an empty state again.

If this is fixed, and it is pretty major, shouldn't there be a new release tagged with this in?

What do you mean? This is fixed since 2.3. The most recent version is 2.8.