Taking the risk of sounding very stupid... is this about the file
selection dialog that one gets when e.g. editing an app icon or about
the new built-in file manager? If the latter is true, how do I get the
fm? Since the "Test file manager" entry from the configuration menu is
gone, I cannot find any way to launch it.
"Test file manager" was just that' a test. It works and is now used
where ever you get to select a file. No need to have a test menu item
for it anymore. So the fm and the file selector are the same thing.