editing a page in Chrome fails - works in FF

[Theodore Knab]

How should I troubleshoot a potential bug ? We have one page in Confluence that is no longer editable in Chrome. Interestingly, the page is editable in FF. What would cause this ?

Confluence: LTS 7.13.0 ( not cloud version )

In Chrome, the right upper corner displays a popup that says the browser got a 403 error.  Application page displays 'Can't connect to the server Looks like your session expired. Log in again to keep working.

In the logs, I am not seeing any errors.

looked in :

no errors in /var/atlassian/confluence/logs/catalina.out
no errors in /var/atlassian/application-data/confluence/logs/atlassian-confluence.log

Google in debug mode says:
batch.js?gatekeeper-ui-v2=true&healthcheck-resources=true&highlightactions=true&hostenabled=true&locale=en-US&user-logged-in=true:5381 POST https://confluence.chesapeakebay.net/rest/tinymce/1/drafts 403

[Kishan Sharma]

Hi @Theodore Knab 

I have few questions -

If you access the page in Private/Incognito mode, does the problem still occurs?

If you clear your cookies/cache in chrome, does that make any difference ?

Is your google chrome version up to date ?

Are there any proxy settings in your google chrome and not in FireFox?

[Theodore Knab]

Thanks for the questions. Here are my findings.

With  incognito mode, I get the same error.

Clearing the cache and cookies doesn't do anything. I still get the same error.

Google chrome is Version 94.0.4606.61 (Official Build) (64-bit) ( latest 9/24/21)

no proxy settings are set.

[Kishan Sharma]

That's interesting. I think it would be better if you collect the HAR file on chrome and raise a support ticket to Atlassian for them to troubleshoot as its only happening for a single page.

[Theodore Knab]

It doesn't appear I can create a support ticket. The web interface is either broken or doesn't allow non cloud users to submit tickets. We run our Confluence onsite. How can we get a ticket started for this ?

[Kishan Sharma]

That is not the case, The support website should work on Chrome, you can try it in FireFox otherwise. If you have on-prem instance, you should be able to raise support ticket by providing your Service Entitlement Number.

[Theodore Knab]

ah. the nested drop down threw me off.  I don't encounter them very often.

thanks.

[Patrik Lindström]

Theodore Knab

Did you find a solution? We have the same version  and the exakt same problem. People running Mac and Chrome. For some it works as a workaround using Safari or Firefox. They cant save their drafts error in web browsers console shows:

VM6:1 POST https://confluence.xxxx.yyy/rest/tinymce/1/drafts 403

[Patrik Lindström]

It seems related to using code blocks on the page. 

[Theodore Knab]

For us, we had an WAF rule somewhere that was causing this problem. If you have a WAF you may want to put it in pass through mode for a short time to see if the problem goes away.

[Patrik Lindström]

We could not use word like localhost or 127.0.0.1 then the user would get logged out.
For us it was a also a WAF (Web Applicaiton Firewall ) rule also . 

There was a AWS-AWSManagedRulesCommonRuleSet:EC2MetaDataSSRF_BODY rule that interfered. 
So we changed it in the AWS console and set it to count instead of block. 
You can read more about them lhere here.
https://itzone.com.vn/en/article/some-problems-when-using-aws-waf/