pgAdmin 4 1.0-beta4 - Query Tool, Select file popup issues

Hi,

If this is not the correct place for pgAdmin 4 feedback, please let me 
know. I am trying to switch to pgAdmin 4, even though its beta, because 
pgAdmin 3 often crashes, and I lose work - I see that is a known issue, 
but am not sure if a fix is in progress?

Anyway, in pgAdmin 4, I have noticed the following when Opening a File 
in Query Tool:

- Clicking the icon to open the "Select file" popup is very slow 
(Windows 10). >3 seconds for pgAdmin4 wheras <1 second for pgAdmin 3.

- I am presented with a list of directories, but no idea which 
drive/directory I'm already in (e.g. C:\) and no obvious way to switch 
to my other drives where the files I want are located. I can't edit the 
file path directly to change this. This makes pgAdmin 4 unworkable for 
me currently. Beta 1 did allow directory changes.

- Only the first 10 characters of filenames are shown even though 
there's much more space available. This means I can't distinguish 
between a lot of the files I need to.

- When viewed as a tables, the order of directories seems random - not 
by name, size or date, and ordering by those columns doesn't work

I appreciate the preference for a consistent look and feel, but the 
native Windows Open File dialog (as used in pgAdmin 3) seems quicker and 
more fully featured e.g. I can rename and move files and directories 
within it. Perhaps it doesn't work with the new web based paradigm though.

I appreciate the work you are doing,

Regards,
Mark