Category selection may fail

Addition: _some_ categories with blank can be selected in the Web GUI (not for editing, though), e.g.:
(Site URL)/event-list/?cat1=Chamber+music&date1=all
where the category name is “Chamber Music” —?but that only works for _some_ categories, i.e., at the very least, the filter is very erratic.

Category selection in the editor GUI fails completely (no events shown at all).

In the selection the category slug has to be used. Slugs do not have spaces.
Have you added the “cat_name” in the url manually?
Can you give a more exact description of “selecting categories in the editor fails if the category name includes a blank”. A step-by-step procedure description would be great for reproducing your issue.

OK, if I construct a URL with the category slug, that works fine, indeed —?but I don’t see the category drop-down modify the URL (and with the drop-down, the menu items are collected internally anyway). Once I have a category selector in the URL, selecting a year (standard GUI, i.e., simple [event-list] shortcode), selecting a year will modify the year, but the category selector stays in?—?looks like I need a reset option to remove it, or call the plain URL again… There seems to be a disconnect between the category dropdown and the new URL-based selection mechanism?

Should be fixed with todays released version 0.8.2