Cannot modify Tunnel Authentication on Windows

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, Master
• Fix Version/s: 7.0.0 DXP FP58, 7.0.0 DXP SP9, 7.0.X, 7.1.X, Master
• Component/s: Portal Configuration > System Settings
• Labels:
  • QA-NA
  • liferay-dxp-70-sp9
  • liferay-fixpack-de-58-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/60827

To reproduce:
1. navigate to Control Panel > Configuration > System Settings
2. select API Authentication
3. select Tunnel Authentication
4. open /api/liferay/do entry for editing
5. click on Update

Actual result:
Menu disappears.
/api/liferay/do entry is deleted
Info message in the tomcat log:

INFO  [http-nio-8080-exec-7][BindConfigurationMVCActionCommand:259] Delete inconsistent factory configuration file:/C:/Users/<user>/workspace/bundles/osgi/configs/com.liferay.portal.security.auth.verifier.internal.tunnel.module.configuration.TunnelAuthVerifierConfiguration-default.cfg

Please note that it occurs on Windows only. Probably because file path starts with /C:/Users

Tested on master 589fa1d 7.1.x ec0cd6c