Web Access switches to a mouse panning mode whenever it detects that the browser doesn't have functional scrollbars. We add a button to the toolbar to allow toggling between panning and normal mouse interaction.
However, panning is only relevant when the session is larger than the browser window, which is rarely the case. It is then confusing exactly what the button does, as the intended functionality is rarely seen. Instead, the user just gets weird mouse behaviour whenever it is active.
We previously hid the button whenever it wasn't relevant, but we stopped doing that as we found it confusing that the toolbar changed layout. But we could at least disable the button when it has no function.