Awesome, I took a look through the code out of curiosity and I was able to solve this issue with three line changes in the media-library-plus.php file (for anyone else running into this issue):
$images_pre_page = get_option(MAXGALLERIA_MLP_ITEMS_PRE_PAGE, ‘500’);
$images_pre_page = ‘500’;
The first line is actually in two places, I changed the number for both. So three lines just needed a simple number change. With quick testing I don’t see any regression so far. I’ll mark this solved after a bit more testing.
Seems like an arbitrary number, maybe for lower server resources? If so, maybe putting an easily changeable option in the settings would be super helpful for others – because I thought it was a bug. Or AJAX pagination or something.
There is no need to edit the plugin code. The number of files that can be displayed in a folder can be changed in the plugin’s settings. The reason that there is a limit is that some users wanted to move files from a folder containing many hundreds of files, but there were too many files for a browser to display. Adding a limit that could be changed allowed one manage the number of files to display without crashing the browser.