[Bug 48388] New: Lord of the Rings Online: login fails with "Connection closed" in 5.0-rc3 (regression vs. 4.xx)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48388

Bug ID: 48388
           Summary: Lord of the Rings Online: login fails with "Connection
                    closed" in 5.0-rc3 (regression vs. 4.xx)
           Product: Wine
           Version: 5.0-rc3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Since upgrading WINE to 5.0-rc3 from 4.19 I can no longer log into Lord of the
Rings Online (LOTRO), rendering the game unplayable.
Reverting to WINE 4.19 restores functionality (4.20/4.21 and earlier 5.0 RCs
not tested).

OS:
Ubuntu MATE 18.04 amd64

Steps to reproduce:
- ensure LOTRO is fully patched
- install WINE 5.0-rc3
- start LOTRO ("wine LotroLauncher.exe" in install dir)
- enter username and password
- click "Log in" button

Expected behavior:
- user is logged in, laucher shows server list

Actual behavior:
- for several seconds nothing happens, then a popup appears with the message:
"Error logging in! Connection closed"