The nested span tags are interleaved with multiple pieces of content and other tags.

Issue Summary

When loading a page created with the legacy editor that has several span tags - they load a Error: Rendering this content exceeded the timeout of 30 seconds. message instead of the page's content.

It looks similar to the bug below, but there is a slight difference that the nested span tags are interleaved with multiple pieces of content and other tags.
CONFCLOUD-76770: "Rendering this content exceeded the timeout of X seconds" for pages created with the legacy editor and has a lot of nested span tags

Steps to Reproduce

1. Create a Confluence page with the legacy editor
2. Add a lot of formatting so that there will be several hundres nested span tags
3. Publish the Page

Expected Results

The page can be loaded.

Actual Results

The page keeps loading for a while, then displays the Error: 

Workaround

1. Edit the page by going into edit mode through the URL: https://<YOURSITE>.atlassian.net/wiki/spaces/<SPACEKEY>/pages/edit/<PageID>
2. For each elements that has multiple span tags, refresh their formatting and set them again.

Another possiblity is to convert the editor to the new one.