Add-ins menu above MessageReadCommandSurface is disabled in Outlook for Mac

We have an Outlook add-in that uses add-in commands that work fine in Outlook 2016 for Windows and OWA, but has issues in Outlook 2016 for Mac with menu controls in the main Outlook Home TAB (MessageReadCommandSurface). For this type of add-in command, the menu breaks down so that you cannot select items prior to the first two items in the list.

When you cursor down the menu, each button is selected, but as soon as you get to the third item, the selection disappears and you cannot activate any buttons. If you move up to the top of the menu, you get a choice for the top two positions, but if you press the cursor again, the problem returns. Even a two-item menu has a problem, as if you move the cursor down to the bottom of the list, the menu becomes inactive until you move the cursor up and down.

If this was something we did, I tried to create a super-clipped manifest with a simple taskbar launched from two buttons:

    <DesktopFormFactor>
      <FunctionFile resid="functionFile" />
      <ExtensionPoint xsi:type="MessageReadCommandSurface">
        <OfficeTab id="TabDefault">
          <Group id="group1">
            <Label resid="strProdGroupName" />
            <Control xsi:type="Menu" id="menu1">
              <Label resid="strAbout" />
              <Supertip>
                <Title resid="strAbout" />
                <Description resid="lsOpenAboutTaskPane" />
              </Supertip>
              <Icon>
                <bt:Image size="16" resid="logo-icon-16" />
                <bt:Image size="32" resid="logo-icon-32" />
                <bt:Image size="80" resid="logo-icon-80" />
              </Icon>
              <Items>
                <Item id="item1">
                  <Label resid="strAbout" />
                  <Supertip>
                    <Title resid="strAbout" />
                    <Description resid="lsOpenAboutTaskPane" />
                  </Supertip>
                  <Icon>
                    <bt:Image size="16" resid="logo-icon-16" />
                    <bt:Image size="32" resid="logo-icon-32" />
                    <bt:Image size="80" resid="logo-icon-80" />
                  </Icon>
                  <Action xsi:type="ShowTaskpane">
                    <SourceLocation resid="aboutPage" />
                  </Action>
                </Item>
                <Item id="item2">
                  <Label resid="strAbout" />
                  <Supertip>
                    <Title resid="strAbout" />
                    <Description resid="lsOpenAboutTaskPane" />
                  </Supertip>
                  <Icon>
                    <bt:Image size="16" resid="logo-icon-16" />
                    <bt:Image size="32" resid="logo-icon-32" />
                    <bt:Image size="80" resid="logo-icon-80" />
                  </Icon>
                  <Action xsi:type="ShowTaskpane">
                    <SourceLocation resid="aboutPage" />
                  </Action>
                </Item>
              </Items>
            </Control>
          </Group>
        </OfficeTab>
      </ExtensionPoint>
    </DesktopFormFactor>

      

        
        
        
      

    

This simple menu reproduced the problem.

Some information:

• The menu works great if you go out by email and use the menu from the Message TAB email.
• You need to open the taskbar from the menu twice to cause the problem.
• Opening the letter, he closes the menu.
• The problem does not occur in Outlook for Windows or OWA.

I understand that this is a strange problem and there may be something we are doing wrong, but testing shows that we are not doing it.

Questions:

• Has anyone else encountered this problem?
• It would be ideal to try another add-in that uses the add-in command menu on the MessageReadCommandSurface. Does anyone know of an Outlook add-in with a menu like this that we can try? Maybe something free from the store?
• Any suggestions we can try to resolve this issue?
• Does anyone know a list of known issues for office.js add-ins working under Outlook for Mac?

thank