Just a few issues I've noticed:
Issue A:
1. Set the save configuration option to 'Save configuration immediately' (under Application Options > Exit).
2. Open multiple slickedits
3. Modify the configuration in one of the most recently launched instances of SE
4. Observe, you'll see the error: "Failed to save configuration to <path>, Access Denied", click OK, now you'll see the message: "Unable to save the configuration Do you want to exit anyway?" (even though I wasn't trying to exit!), click any of the buttons (yes/no/cancel). This brings you back to the start of 4, with the access denied message.
5. The only way to get out of this infinite loop is to close all other instances of slickedit so the configuration can be saved.
Issue B:
Launch slickedit without it loading the last used workspace. There doesn't seem to be an option to have slickedit start without loading any workspace. This doesn't really cause any problems, it's just slightly annoying...as I don't want to be loading a workspace I'm not using.
Issue C:
Undo / Redo...seriously, cursor movements erase the redo buffer? I understand for some this may be desirable behavior, but I'd imagine for others it's completely opposite of what they'd expect. There are many times I want to undo -> look around the code a little -> redo the changes. With the current slickedit behavior...I need to be extremely cautious that I don't accidentally move the cursor, otherwise I lose my redo buffer!
This, honestly, is kind of a big deal for me.
Issue D:
I'd like my insertion mode to be sticky. If I switch to block selection mode, I'd like it to stay there until I switch back.
All the above issues were using v15 of slickedit on Windows.