Bookmarks, column settings not updated when set from another window

[klepsydra]

When using multiple tabs within one Explorer++ window, Bookmarks that you save persist when you switch between tabs showing different folders, as you would expect.

When you Clone Window or otherwise work within a separate Explorer++ window (eg. to facilitate working across different folders having multiple visible at once, drag & dropping, etc.), it behaves as if their bookmarks are independent:
Additions in one Explorer++ window do not reflect in new bookmarks in the other window. Similar with edits/deletions.

It is unclear which version of Bookmarks would get saved or how they are stored between program launches.

Particularly annoying was that column settings (which selected, order, and positioning) are also lost after you had set them up in one window and closed it.

[derceg]

At the moment, only a single top-level window is supported per-process. As you've noticed, the way in which settings are saved between processes is unspecified and not something you can rely on.

Originally, the plan was to fix this by sharing data between processes. But hosting multiple windows in a single process (as something like Chrome does, for example), is a lot easier. There's currently a command line flag to enable that behavior:

explorer++.exe --enable-features MultipleWindowsPerSession

When using that flag, a File > New Window menu item will be added, for example. A window opened that way will be in the same process as the original window, so all data will be shared. If you exit the application using File > Exit, each window you have open will be restored when you next start, in the same way that a web browser would restore windows.

This is still a command line flag since the work isn't complete. but most things should just work.