Sharepoint - 2013 Workflow missing when viewed from another PC

I was experiencing this problem as well with my co-workers. I believe this is a SharePoint designer bug. What you need to do is install the SharePoint designer update for each computer that is having this problem.

Here is the link below for the update:

https://support.microsoft.com/en-gb/kb/2837633

For this kind of problem the @Murtaza Taz's answer is actually sufficient. But as you can see, the mentioned update is from December 10, 2013.

After playing more with the SharePoint Designer you could encounter more problems connected with Windows 8.

E.g. save and publish of workflow (WF) doesn't work sometimes, refreshing the WF, some actions in the WF doesn't work). But all of these are working on Windows 7 machine.

I solved it with installing the Service Pack 1 and then newer update from August 2015.