Issue with $pages->get('pathname') in PW3.0.148

[MarkE]

I'm trying to make my ProcessDbMigrate module operate in pre-PW3.0.152 versions, but I've hit a really weird issue which is best illustrated in the following:

As you can see, I obtain the path of the current page in the Tracy console, then attempt to find it in $pages->get() but it yields a null page. The same code works fine in the parent page and in a similar page PW3.0.165. Any ideas what might be causing this?

[MarkE]

If I split the path into its segments then PW gets it just fine:

Odd!