- The way that it still doesn't play nice with cloud services (syncing the directory and its just a matter of time until you get database corruption. It takes a lot of wonky setting up to get it to kind of work, which just shouldn't be the case
- The lack of developers and thus slow pace of improvement. I'm a researcher not a programmer - which I think describes most people using it. That means unfortunately we are reliant on one or two volunteers to improve the product. The pace of improvement is slow, and theres also no way to meaningfully advance it - be that through offering bounties for someone to implement certain features, just inputing lists of bugs/feature requests (the list is already v long, and doesn't move much), or anything else.
It's a really good bit of software (and I don't want to sound ungrateful), I just know it still has a lot of quirks. This means it can't always do what you want, and it isn't an easy obvious choice for new researchers - Mendeley is certainly more familiar and easier to use.