Batch page always rendered in default theme

I think this is more of a feature request than a bug report.

🐛 Admin theme not active when using batch export method and a display path starting with admin/ Needs review is related, though it covers more scope.

This works fine, thank you.

+++ b/src/Plugin/views/display/DataExport.php
@@ -152,6 +152,9 @@ class DataExport extends RestExport {
+    $batch['theme'] = \Drupal::request()->query->get('theme');

Is this a random security type issue? In that presumably you could request a theme you wouldn't normally have access to?

Do we need some kind of security token type thing to validate that?

This got solved in 🐛 Admin theme not active when using batch export method and a display path starting with admin/ Needs review I reckon. Thanks everyone for the work here.