FILESAVE: Button dissapears after saving in Calc

Created attachment 130827 Test document. Steps to reproduce: 1. Open attached file with Libreoffice Calc. 2. Save it as is. 3. Open it in Excel. Expected result: Button is there. Actual result: There is no button. It has dissapeared. This problem doesn't exist in Libre 4.4, only versions after that. I don't want the script to work in Libreoffice as it was written for Excel. I just don't want the button to dissapear.