I'm on the latest v26.5. Any others with same problem? It's a rather large file. When I outline a shape and try to expand it, the results are hit and miss. Sometimes it's working and sometimes it is not. Exact same steps taken.
Sorry to hear about the trouble you are facing. Would you mind trying resetting the Illustrator preferences (https://helpx.adobe.com/illustrator/kb/troubleshoot-preference-issues.html) and checking if that makes any difference?
If it doesn't, would you mind sharing a small video demonstrating the issue along with a download link to a sample file?
I will be looking forward to your response.
Seems to have helped, at least for the time being. If it persists going forward, I'll video and come back here. Thanks.
Glad to hear that. Please feel free to reach out if you need further assistance. We'd be happy to help.