[Plugin: NextGEN Gallery] html tag Alt, something wrong

Hello,
I noticed recently that when I write in the field of an image a description and use apostrophe, the text which follows the apostrophe doesn’t appear in the alternative text, but only in the html tag ALT and title. Do you use encoding in your plugin? I think the problem is in the html encoding, because NextGENgallery sees the apostrophe as the closing of the alternative text.

Thanks for any help or suggestion!

https://www.ads-software.com/extend/plugins/nextgen-gallery/