[Bug 48114] New: wine: could not open working directory L"unix\\home\\tod\\", starting in the Windows directory.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48114

Bug ID: 48114
           Summary: wine: could not open working directory
                    L"unix\home\tod\", starting in the Windows
                    directory.
           Product: Wine-staging
           Version: 4.20
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ---

Created attachment 65702
  --> https://bugs.winehq.org/attachment.cgi?id=65702
new mono failing to install

After upgrading to staging 4.20 I'm using a new message I can't understand:

wine: could not open working directory L"unix\home\tod\", starting in the
Windows directory.

I can't reproduce it on a clean prefix though, such as:
WINEPREFIX=/home/tod/Downloads/test WINEDLLOVERRIDES='winemenubuilder.exe=d'
winecfg

Could this be because my current prefix is not updating mono automatically, and
in fact can't run the new mono installer at all? See the attachment for output
on 'wine start wine-mono-4.9.4.msi'.

Sorry if they're separate bugs.