Glitch when trying to display few data entries sharing only two different dates

I have a scatter plot (grouped) that works correctly for every other dataset except for this one. Here, the last date should be in 2024, but is displayed in 2027.

This one only has 4 entries that should display on 2 different dates.

,id,country,affiliation,draft,title,submission_date,wg,docid
0,116736,,ARTICLE 19,draft-irtf-hrpc-research-14,Research into Human Rights Protocol Considerations,2017-10-01,,RFC8280
1,119890,,Oxford Internet Institute,draft-irtf-hrpc-research-14,Research into Human Rights Protocol Considerations,2017-10-01,,RFC8280
2,116736,,University of Amsterdam,draft-irtf-hrpc-guidelines-21,Guidelines for Human Rights Protocol and Architecture Considerations,2024-09-01,,RFC9620
3,125317,,GG,draft-irtf-hrpc-guidelines-21,Guidelines for Human Rights Protocol and Architecture Considerations,2024-09-01,,RFC9620

Now, if I change the month of the last entry, then the display works. If I add a 5th entry, the display also works. I'm not sure what to make of that:

Might that be a tiny bug?

使用提供的四行数据重现分组散点图，尤其要关注两个 2017 年提交日期和两个 2024 年提交日期。将渲染出的日期与修改最后一个月份或添加第五行的变体进行比较。对于原始的四条记录数据集，如果最终日期仍为 2024，则视为完成。