Hi again @leanda …
Update:
Seemed to work fine (no admin bar). My steps were:
1. Switched my server environment to use PHP v5.3
2. Installed a fresh copy of v0.9.5.2 in my WordPress 4.7.2
3. Turned on Page Cache & Minify and navigated my website
4. Saw the garbled (strange) symbols you were originally getting
5. Followed the steps above to download the raw file of PgCache_ContentGrabbber.php.
6. Uploaded this new file via FTP to the w3-total-cache directory
7. Flushed All Caches
8. While on the Admin page i visited the website just to see the admin bar…perfectly normal to see the bar while logged in. I navigated to several pages. I also checked the cache directory (via FTP) to verify that these pages were not being cached (since my setting is to not cache pages for logged in users)
9. I logged out of admin page
10. I navigate to my website and visit several pages. I see no Admin bar
11. I check via FTP to see the pages are now being cached to disk — they are.
Conclusion:
So i get a sense it may have been something else that was causing the problem because i was not able to duplicate your issue, unfortunately.
From what you’re saying your admin pages were being cached when you were logged in. Or i wonder if you were actually logged still, after the change, when this was happening?
If you have the means to do some experimentation i’d love to get more info to see if it indeed still happens on your end — ensuring you are logged off after making the change. And seeing if these admin pages are being cached to disk.
Thanks for the info
Kimberly