Google's crawl limit is now 2 MB.
Check if your HTML content is being cut off by the indexing bot.
About the 2MB Limit
HTML Files: Googlebot stops crawling an HTML file after the first 2 MB. Any content after this cutoff is not indexed. This limit applies to the uncompressed data.
Resources: Each resource referenced in the HTML (CSS, JavaScript) is fetched separately and is subject to the same 2 MB limit.
PDF Files: Googlebot is more generous with PDFs, crawling the first 64 MB.
“Once the limit is reached, Googlebot interrupts the retrieval and sends only the downloaded part for indexing.”
— Google Search Central