Cannot copy and or edit Confluence page The connection timed out with Maximum call stack size exceeded error

Summary

Cannot copy and/or  edit Confluence page The connection timed out with Maximum call stack size exceeded error

Environment

• Confluence Cloud
• Google Chrome

Steps to Reproduce

Open the specific page

1. Try to copy it
2. Notice that an error message is displayed:
    "The connection timed out
   Check you can connect to the internet, then try reloading. If there's no problem with your connection, speak to your Confluence admin."

Expected Results

The page should be successfully copied.

Actual Results

There's slowness when typing - characters might take a second or two to be rendered in the screen.
The page is not saved and an error is displayed:
"The connection timed out
Check you can connect to the internet, then try reloading. If there's no problem with your connection, speak to your Confluence admin."

Notes

1. The page seems to be saved as a draft and if we check the “Recently worked on” page we can open it and if we try to publish it a second time will be saved.
2. Developer tools error:

   log.cljc:20 warn reinit *Maximum call stack size exceeded*
   RangeError: Maximum call stack size exceeded
       at vJ (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1087:354)
       at https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1088:193
       at N.h.Qb (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:306:133)
       at ec (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:147:213)
       at sJ (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1088:137)
       at rJ (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1083:430)
       at tJ (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1084:291)
       at https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1088:79
       at m.h.Bf (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:350:218)
       at Uc (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:53:59)
       at take? 
       at RO (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1392:528)
       at https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1619:392
       at Function.b [as g] (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1612:452)
       at FN (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1262:63)
       at https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1262:211
       at https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1252:502
       at qN (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1249:287)
       at MessagePort.b.port1.onmessage (https://synchrony-cdn.atlassian.io/resources/js/synchrony.min.js:1248:296)
   (anonymous) @ log.cljc:20
   pE @ log.cljc:18
   qE @ log.cljc:26
   (anonymous) @ end_point.cljc:650
   b @ end_point.cljc:650
   FN @ ioc_helpers.cljs:35
   (anonymous) @ ioc_helpers.cljs:48
   (anonymous) @ channels.cljs:61
   qN @ dispatch.cljs:19
   b.port1.onmessage @ (index):211
   batch.js?externals=__local-default__&locale=en-GB:369 Synchrony disconnected!
   

1. We have noticed that if we check the Page Storage format, there are a lot of HTML tags e.g. “span” appears more than 30 000 times.
2. Specific detail to be noted: issue was noticed for a page which has a big table

Workaround

If your page is copied from other HTML content to Confluence editor, the page is prone to contain a lot of "span" tags like as below:

<span style="color: rgb(51,51,51);">

You can verify this by "View Storage Format" and search "<span style=" on the page. If this is your case, there are several ways to fix the content:

Option 1

• Try to publish the page a second time

Option 2

• Edit the affected page on Firefox and apply "Clear formatting"
  

Option 3

• Export the page to [^Screenshot 2018-04-26 11.36.21.png] and then import the word file to Confluence page.
  However, in many cases, you have to fix the alignment after importing the word file since these pages tend to contain complex elements.
  

See also How to normalize HTML tags in page for more detail.