Issue: NextGen Gallery JS/CSS files does not load in Roots/Sage v9 (base part of URL is doubled) other templates are fine

sage
1

I’am dealing issue that popular NextGen Gallery plugin doesn’t work on Roots/Sage v9 - none of gallery admin JS/CSS files can be loaded.
These JS/CSS files are fetching form wrong URL that contains doubled domain part of URL:

 <script type='text/javascript' src='http://wp.local/http://wp.local/wp-content/... >

...
<script type='text/javascript' src='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/frame_communication/static/frame_event_publisher.min.js?ver=2.1.60'></script>
<script type='text/javascript' src='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_admin/static/gritter/gritter.min.js?ver=2.1.60'></script>
<script type='text/javascript' src='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_admin/static/ngg_progressbar.min.js?ver=2.1.60'></script>
<script type='text/javascript' src='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/ngglegacy/static/overview.min.js?ver=2.1.60'></script>
...
<link rel='stylesheet' id='gritter-css'  href='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_admin/static/gritter/css/gritter.min.css?ver=2.1.60' type='text/css' media='all' />
<link rel='stylesheet' id='ngg_progressbar-css'  href='http://wp.local/http://wp.local/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_admin/static/ngg_progressbar.min.css?ver=2.1.60' type='text/css' media='all' />

If I switch WP template for example to Twenty Sixteen … everything works fine.

I am running on:
WP 4.6.1
Roots/Sage: 9.0.0-alpha.4
NextGEN Gallery: 2.1.60

2

Are you using Soil? The OP in this thread mentioned disabling Soil’s relative URLs allowed the plugin to work for them: