Currently task panes are a fixed width by default. Users can manually increase the width but cannot reduce it. In addition neither users nor their organisations (customers) want to perform a manual a...
At my company we publish an Excel VSTO add-in and we would really like to switch to the new JS API. However, not being able to change the taskpane width is a major dealbreaker for us because we need to show a pdf viewer in the taskpane. The default width is not suitable for viewing pdf files. Any update on whether this will be implemented in the future?