OSS End Point Manager - Advanced Settings / PCE not working any more

Dear folks,

I recently ran into the issue that the Product Configuration Editor ist not working any more for me, starting with the 13.0.1 release.
After the “select” button the php-code is displayed instead of content.
Unfortunately I’m not the big php expert, but looking into epm_advanced.poce.page.php it seems that there is too much copy/paste from the corresponding html file in there, instead of correct php code (at least compared to the other view php’s.

Has anybody else experienced this?