After opening the saved webpage snapshot in Zotero 7 Beta, it was found that it could not be enlarged.
The issue occur with all snapshots.

https://s3.amazonaws.com/zotero.org/images/forums/u8576413/v4cmwpe91el4l89o3287.png

I can provide links to websites where this issue is observed ：
https://m.thepaper.cn/baijiahao_20081914

https://www.zhihu.com/

https://mp.weixin.qq.com/mp/appmsgalbum?__biz=MzAxNDcyMTgxMQ==&action=getalbum&album_id=1319301168916545537&scene=173&from_msgid=2651598781&from_itemidx=3&count=3&nolastread=1#wechat_redirect

http://mp.weixin.qq.com/s?__biz=MzAxNDcyMTgxMQ==&mid=2651566394&idx=1&sn=fa1c242e41576cb8821217f5dfa2513e&chksm=8071e746b7066e5061867ca8d23c0aa10f9a20884c5a832e1e832dee16d309b21aaf9b6b8f2a#rd

http://mp.weixin.qq.com/s?__biz=MzAxNDcyMTgxMQ==&mid=2651569075&idx=2&sn=d8d76a5d3e5038668384679d705608c1&chksm=8071edcfb70664d916e0826f3d16dd023860ee4ec5f28ea2822fbb4f89c6c6d6097c22a399d8#rd

http://mp.weixin.qq.com/s?__biz=MzAwMjI5Nzk4Ng==&mid=2658330235&idx=1&sn=85b85e4277da6e82ba914b5732907763&chksm=814adf96b63d5680fa3b16a65cdc691383dbcc83e21ba76401270e0571853919c9890c7adbfc#rd

http://mp.weixin.qq.com/s?__biz=MzIxMTAzODg3OA==&mid=2247498420&idx=1&sn=3b013244f323d0f07eb1ed821bba1156&chksm=9759dd45a02e5453ac4c30cfe08143dc9285e5b6c5be2b3c9c51b3a8c5448aa88964e0e2a34b#rd

https://www.cmtopdr.com/post/detail/fe48ac2e-d818-4a75-ad47-d25ba9a3d562.html

https://www.cmtopdr.com/post/detail/cd5b9ef7-c8c2-4a22-b453-bf90beda55ba