Thanks for the lovely feedback, Qihong, and for joining our forum! The matter of capitalization has come up before and is something we hope to find solutions for eventually. We currently pull information from the web or PDFs and cross-check across several databases for corrections/updates, which means we rely on the formatting as made available by publishers in the metadata. This can be automatically corrected while citing sources with some citation styles (if their parameters contemplate capitalization), but there’s no tool to do that in the metadata yet.
I’ve come across auto-capitalization / correction tools in other software so it’s certainly a possibility - just not something we’ve prioritized thus far. Nevertheless, I’ve added your +1 to the topic on our internal tracker for the team’s consideration. Please don’t hesitate to reach out again with any further questions or observations you might have.