Users running a version of Rulestream earlier than 18.104.22.16825 will want to move to the new Rulestream 22.214.171.12425 (or later) build BEFORE upgrading their version of Windows to the Windows 10 April 2018 Update, version 1803.
Users are reporting that when they apply Windows 10 April 2018 Update, version 1803 they are losing the default font for UI Controls in Rulestream. This causes text to be displayed in Symbols or Wingdings font:
This is corrected by defining a default font for all Custom UI controls in Rulestream.
You can either do this manually by mapping a font directly to the UI control in the UI builder . . .
You can download a new build of Rulestream 8.15.2 with the default font set in the UI controls in the UI Builder. This new build has been posted on the Siemens PLM GTAC Download site. A Software Field Bulletin (SFB) has been sent indicating that it is ready for download.
NOTE: Software Field Bulletins (SFB's) are used to keep you in touch with important news and information about your Siemens products such as Rulestream. If you did not receive a Siemens SFB on the issue being reported here in the Community it is strongly suggested that you sign-up to receive these in the future. Here's a link to the Knowledge Article on how to sign-up for SFB’s.