URGENT: Auto-save not working

[SoulDolls]

Hello. I'd appreciate if someone can help urgently... Auto-save does not get triggered if I copy & paste the following in a text box, so there is no way I can update the page.

QUOTE
1801—I have just returned from a visit to my landlord—the solitary neighbour that I shall be troubled with. This is certainly a beautiful country! In all England, I do not believe that I could have fixed on a situation so completely removed from the stir of society. A perfect misanthropist’s Heaven—and Mr. Heathcliff and I are such a suitable pair to divide the desolation between us. A capital fellow! He little imagined how my heart warmed towards him when I beheld his black eyes withdraw so suspiciously under their brows, as I rode up, and when his fingers sheltered themselves, with a jealous resolution, still further in his waistcoat, as I announced my name.
UNQUOTE

If I make the text shorter, auto-save works...

Please find below my situation:
Apache version: 8.3 (module version)
WonderCMS version: 3.6.0
Theme: SKY
Plugins: Summernote Editor

Thank you so much in advance for your help.

[NorfolkGreg]

Have you solved this issue yet?

Are you saying that after pasting in the text and clicking outside the page's edit area your pasted text just disappears?