Bottom-most collection is always expanded when playing and quitting a map present in 2+ collections.
p/2253876
If you play a map in the collections then exit, if the map is in another collections folder, it will expand the bottom-most folder instead of the one you played it from.
1. Have the same map in two different collection folders.
2. Play a map in top-most folder (The top-most folder is dt in this picture).
3. Go back to song select.
4. osu! will expand the bottom-most folder instead of the one you played it from.
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Recap image by p/2255763 :
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Fixed Issues
p/2253876
If you play a map in the collections then exit, if the map is in another collections folder, it will expand the bottom-most folder instead of the one you played it from.
1. Have the same map in two different collection folders.
2. Play a map in top-most folder (The top-most folder is dt in this picture).
3. Go back to song select.
4. osu! will expand the bottom-most folder instead of the one you played it from.
__________
Recap image by p/2255763 :
Fixed Issues
- Arrow keys jump from one collection to another if a map is in multiple collections.
http://osu.ppy.sh/forum/p/2292919
When navigating using left and right arrow, sometimes it happens to jump through different collections.
This happens when you put the same song in 2 different collections, and you get through them using arrow keys. It only happens when you navigate a collection which is located under the ones that contain the same song.
In other words, in the video, if I navigated in Test 1 using arrow keys nothing would have happened, because it's above the collection Test 2. - Collections group collapses even if you don't make any changes to a collectionIt would be helpful if the game would remember what collection you were in after leaving the Manage collection window. Ignore if this is intended behavior.
- Add/Remove buttons overlapped by too many collectionsCollections overlap the Add and Remove buttons when you have too many collections.
- Arrow keys in song select working incorrectly.
p/2254792
When trying to switch songs by using arrow keys, it happens that it jumps to different collections without any apparent reason.
Sometimes this happens too if you sort songs by "Date": if you're checking Today's songs, without any apparent reason it goes to Yesterday's songs, if you navigate using arrow keys.
I don't know why this is happening, and this bug occurs quite often, but not all the times.
XPJ38 edit: here's another example of arrow keys working incorrectly (description on Youtube): - "Enter name first" should not appear in a certain case.
http://osu.ppy.sh/forum/p/2249448
After trying to create collection (ad. for the first time), click the text box, and just make sure it was used (so the default text disappeared). Then hit cancel, without creating collection:
This appears, even though it shouldn't. - The first time you randomize in any folder/grouping/collection the first map in that list will always be selected. Kind of wish randomizing were 100% random.
- Names can be too longNames can be too long.
Putting long names on the bar causes this to happen. Also, while hovering on the name of the collection, it would overlap the ranks. (e.g. SS: 0 S: 0)
Textbox for long collection names still goes behind the collection list. The other problem is better, but still lacks a way to expand the longer collection name. - Number of beatmaps in a collection can overflow outside the boxx
I feel like that icon should only be visible when hovering over each collection. - Editing a map in a collection removes it from the collection and makes osu! crashes.
p/2265075
If you edit a map that's in a collection and save changes, it disappears from all collections it's in and if you try to add it to a collection afterwards osu! crashes.
I made a collection for my WIP maps so it's easier to browse through them, but with this problem it's kinda defeating the purpose.
Not sure how this would be fix-able since you change the beatmap and it makes sense for it to get removed from a collection..
XPJ38 edit: here's a screenshot of what happens after clicking on 1. just after editing the map:
After that, osu! is running but totally locked. Only way to get out of here is to close osu! by closing the window. - Every time you sort by something, you go out of the collection and if you don't know which one you were previous in, you're kind of screwed.
I like when all things are very well organized.
It needs prompt window! (good that FavoritiesA came back after restart) 
