Yoast doesn't detect any content if multiple SVG icons are added in Elementor

[jeroenrotty]

Moved from: https://yoast.atlassian.net/browse/IM-435
Reporter: @monbauza

Description

Yoast SEO is unable to detect any content if multiple SVG icons are added in the Elementor editor. See the screenshot below.

Tested with Yoast SEO v16.5 and Elementor v3.2.5.

Steps To Reproduce

1. Install and activate Elementor and Yoast SEO
2. Go to Templates > Saved Templates and import these templates' file
3. Create a new post and edit it in Elementor
4. Add a text block to it and make sure Yoast SEO is able to detect it. The analysis results should say 'The text contains x words. Good job!')
5. Add the Clickuic - Rating template (which contains quite a few SVG icons) to the post. See screencast.
6. Update the post and refresh the page

Expected Results

The text content is to be detected.

Actual Results

Yoast SEO either doesn't show any results (readability analysis spins) or says that 'the text contains 0 words'.

Note: If I delete all SVG icons except 4 from the post, save the post and refresh the page, the analysis initially detects '0 words' but after 40 secs the analysis does detect the text content.