publication date wrong or missing
It seems zotero sometimes records the "published online date" rather than the actual publication date.
For example, this paper (https://pubsonline.informs.org/doi/abs/10.1287/msom.2016.0592) was published online in 2016, but the actual publication year is 2017.
Also, zotero did not record publication date for some Wiley publications. For example: https://onlinelibrary.wiley.com/doi/abs/10.1111/poms.12585
I am using Windows standalone 5.0.48 with Chrome extension
For example, this paper (https://pubsonline.informs.org/doi/abs/10.1287/msom.2016.0592) was published online in 2016, but the actual publication year is 2017.
Also, zotero did not record publication date for some Wiley publications. For example: https://onlinelibrary.wiley.com/doi/abs/10.1111/poms.12585
I am using Windows standalone 5.0.48 with Chrome extension
In your second example sometimes Wiley's usually excellent embedded metadata doesn't include the actual publication date when it is identical to the citation_online_date. I think that Zotero's Wiley translator wants to find the actual publication date, finds it is omitted, and (correctly, in my view) doesn't include the online date as a substitute.
edit: Wiley' s RIS does include the publication date. However, in the past this was sometimes the online date. Thus, (I think) a reason for using the embedded metadata instead of the RIS. I'd always prefer no information to incorrect info.
We'll look how widespread that issues is. Might be worth just reporting to Wiley.
What Zotero could help with is identifying fields with missing data. For example, a journal article record with missing journal name, page range, or language, etc. would benefit if expected but empty firlds could be highlighted in some way.