If Preferences > Interface > Temporary Editors > File Browser is set to "Maximized Area", opening a File Browser from a File or Asset Browser as regular editor would cause some issues. For example after closing the temporary File Browser, the regular browser would take over the file path and display settings from the temporary one. This is because they used to share the same area data. Some similar issues may have happend with temporary image editors. Now, this commit finally separates the space data of temporary maximized editors from the regular ones. So the editor data is entirely independent now, as it should be.