Greasy Fork is available in English.
Show Instagram images on your Twitter time line.（インスタ画像もタイムラインに表示する。）
< twitter_instagram_show2_newdesignについてのフィードバック
It looks like same as an issue for Firefox.
https://github.com/Tampermonkey/tampermonkey/issues/952
Please wait for releasing 4.11 of Tampermonkey on Chrome.
Or
use Firefox 77 and Tampermonkey 4.11.6114 instead.
Doesn't work
Only the attached image appears in chrome