How to regenerate:
Open multiple pantheon file instance. Right click on pantheon files icon in plank. All instance(window) name is Files. Plank list should show the corresponding window title.
I have also tested this behavior for other application like firefox, chrome etc. Other application are acting as expected.
ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.361+405~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Mon Feb 9 21:46:20 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-02-08 (0 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20141209)
SourcePackage: elementary-meta
SuspiciousXErrors: [WARNING:flash/platform/pepper/pep_module.cpp(63)] SANDBOXED
ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)
We should probably set the title of the window to the current focused tab.