Multi tab UI glitches

[kitzilla]

Hi,

The UI which appears after ticking OFF "Use single tab UI" in the OpenGeo Explorer options seems not being well-maintained and the following glitches happen only for this multi-tab UI.
(Environment: Windows 7 x64 + QGIS v2.8.2 x86 (Standalone Installer) + OpenGeo Explorer 0.7.1)

1. Though "Keep a list of previous catalog connections" is ticked, previous GeoServer connections are not populated in the dropdown.
2. When connecting to geoserver, a warning pops up saying "The specified catalog seems to be running an older version of GeoServer That might cause unexpected behaviour. Do you want to add the catalog anyway?" whilst my geoserver is 2.7.1 (the latest version at this post)
3. Publishing a layer to geoserver always fails with the following warning.

Traceback (most recent call last):
  File "C:/Users/kitzilla/.qgis2/python/plugins\opengeo\gui\qgsexploreritems.py", line 204, in 
    publishLayerAction.triggered.connect(lambda: self.publishLayer(tree, explorer))
  File "C:/Users/kitzilla/.qgis2/python/plugins\opengeo\gui\qgsexploreritems.py", line 367, in publishLayer
    catItem = tree.findAllItems(cat)[0]
IndexError: list index out of range