File Associations Keep Changing

Just to be clear, I rarely drag jpgs from Firefox when I do they have no extension. I've had an issue with a few jpegs opening up in "grab". That may be a result of this.

I mostly have a problem with PDFs switching between opening in Preview to opening in indesign, illustrator or photoshop. I reset, "always open with" and it goes away but comes back several time throughout the day while working. However, I'm not downloading PDF files or anything, so it's very confusing to me.

My firefox is updated I just haven't restarted it, so it is reading as the previous version.

Sorry for the confusion, this issue has been going on for a while and I have been through multiple OS updates since originally posting this question. I thought I had posted an update since then about talking with Apple and them suggesting to do the software update.

This put me on the current operating system (High Sierra) and I update regularly, so I've experience this issue from 10.11.6 up to 10.13.2 (now on 10.13.3). I've experience this every single day.

CountryGirl56 wrote:

Please install EtreCheck and post the report.

http://etrecheck.com/

I have ran EtreCheck multiple times on my machine throughout this process and there were never any issues,

I just ran it. The only issue is below:

System Launch Daemons:ⓘ

[failed] com.apple.updateEFIDesktopPicture-apfs.plist (Apple, Inc. - installed 2018-01-19)

[not loaded] 39 Apple tasks

[loaded] 174 Apple tasks

[running] 118 Apple tasks

Basically, I was told by Apple it was either a "user issue" and that the only likely solution is that I would have to reinstall the operating system. I was also told that no one else had reported a similar issue. I tried for a few days of having multiple users on my machine, but I never really committed to it.

After deleting Firefox from my system, the issue stopped. Files are no longer changing permissions. Have not experienced the issue since deleting firefox and did not do anything other than delete Firefox. I can't imagine that this is due to having installed Firefox prior to 10.13. I recently tested Firefox on my laptop and the issues started. Laptop is on 10.13 as well... so I'm just not using Firefox anymore as it seems to be the culprit -- at least for me -- and removing it from my system took away the issue.

As far as what i was doing -- I mainly work in Adobe Creative Suite. The issue would occur after I saved my files from Indesign, Illustrator, Etc. and then happen randomly throughout the day. I was an avid Firefox user, but mainly used it to read email alongside Safari which was my main browser. Because of mainly using Safari, I rarely dragged files from Firefox. However, I did probably do it at some time. I mainly used it for email. Issue started with PDFs and then became all graphic files. This is why I was originally questioning if it was an Adobe issue and posted on forms over there. Again, it was so arbitrary that it was hard to pinpoint. I contacted Apple several times about the issue, and ran through the normal resets and was testing if it was a user issue on the computer. However, I experienced it as multiple users. Apple told me to update my software, which I did. And I still experienced the issue. The forum here picked up traction towards the issue a few weeks ago, which was nice to know I wasn't solo.

This issue just started on my laptop, which is on 10.13 after I installed Firefox to test whether or not it was a Firefox issue. It was not happening before, this is why I decided the culprit of my issues was Firefox-related.