Thunar Hidden Settings
Recently I have tried it again, after having used pcmanfm for many years. After setting everything up the way I like it I noticed that the shortcuts in the sidepane cannot be rearranged (I am used to having devices first, then bookmarks).
After much searching, I found out that it used to be the way I prefer it, but somebody made an effort to change it, and there are currently no plans to make it configurable... 😢
As a small bonus, here is a list of hidden settings you can configure.