Unable to paste cell[s] with format in Excel by pressing Ctrl+V on a HDX session using Citrix Workspace app for HTML5.

When you copy a cell and paste it to multiple cells, "The data you're pasting isn't the same size as your selection. Do you want to paste anyway?" message is shown and then if you click OK, the value without format is pasted to only the first selected cell. 

It happens only using HTTPS.

1. Paste cell[s] by a method other than pressing Ctrl+V (e.g., Enter key, paste button on the ribbon, context menu etc.).
2. If you don't need to redirect image data or HTML format from session clipboard to client clipboard, set the Restrict client clipboard write policy to Enabled and exclude CF_BITMAP and CF_HTML from the Client clipboard write allowed formats policy.

Problem Cause

This issue is due to a bug in navigator.clipboard web API.