Hi,
I had the same issue. I had the “Show Description Field:” unchecked. After I checked it and added a description, everything worked fine, I had to approve the image. Adding no description though, lead to an immediate display of the image in the gallery again.
The problem lies in the npu-upload.php file in the update_details() method.
1st: in line 244, if no description is set, the code returns and does not set the “exclude” flag.
2nd: if the “alttext” also is empty, in line 254 the exclude handling will also not be entered, as the arrUpdateField have no entry.
I still have no idea though, why the first exclude handling in the class.npu_uploader.php in line 90ff does not seem to reach the db or is overwritten afterwards…