plugin manager updates can't disable update for a single module

Updating for 11.2-u1, in Plugins>Updates see three files:
NetBeans Plugin Development
AngularJS Editor
jVi for NB-7.0 Update Center
(the third elelment for 11.2-u1 was already loaded, long story)

• The bottom "Update" button has label "3 plugins selected, 1MB".
• uncheck the "jVi for..." (which comes from the plugin portal)
  observe: for a fraction of a second, the Update lablel says "2 plugins selected" then goes to "3 plugins selected, 1MB". The jVi checkbox remains unchecked.
• Re-check the jVi, the checkbox does not get checked
• Re-check again, and the checkbox shows checked.

With the checkbox in the unchecked state, press the "Update" button. The checkbox goes into the checked state, the dialog "NetBeans IDE Installer" show all three items. All three items get installed.

I can not update a subset of modules which have udpates.

FYI, the first time I tried to udpate it was aborted because I did not have permission to upate the harness. It must have installed one of three for -u1 before the error.

The attachement shows two checked but saying 3 in label.