I recently updated Acrobat DC (18.009.20044) on Windows 7.
When I open a PDF, either created by Acrobat DC or from another source, the PDF appears blank until I click the PDF screen.
Once I close the PDF the acrobat process remains open in the background and I cannot open another instance of Acrobat DC unless I go into Windows Task Manager and manually shut down the active acrobat.exe process. If I don't manually stop the process, each time I try to open a PDF it will create another acrobat process so there will be multiple acrobat.exe processes showing in Windows Task Manager, but the program will not open until I manually stop them all and then try to open the PDF.
Please fix this, the previous version did not have any of these bugs.
Adobe Acrobat and Reader official update containing the fix for this issue is now available. This update will be automatically pushed to all existing installations of Acrobat and Reader. If you want, you may also manually trigger the update by opening the application and going to Help > Check for Updates.
More information about this release is here: Acrobat Help | Release notes | Acrobat DC and Acrobat Reader DC | Update
Please try it out and let us know your feedback.
Thanks for your patience and support!