Actually, there was something strange with using the box, which is why I avoided it. After using it, the Weights still is applied when I hit the Undo command. Also, the starting value is completely reset when adjusting weights for multiple vertices.
Sorry I missed the bug. I’ve confirmed it can be reproduced and I created an issue for this: https://github.com/EsotericSoftware/spine-editor/issues/626
Even if it's fixed, it's still not as convenient and you can't increase the value a lot with so little window space above.
As I mentioned earlier in my reply to Nick, you can also increase or decrease the value by dragging it left or right.
Anyways, I already expressed my QOL suggestion for the cursor behavior. It would make it easier for me work on the individual Weights that need fine-tuning. I simply want to know if this would be easy or not to implement in an update.
Since there are various issues of enhancements in our roadmap, it might take a long time even a simple updating. Therefore, we are suggesting ways to improve your workflow immediately, preferably with the current features.
Anyway, this doesn't seem to be just a Weights issue, so I will discuss this in the Spine team as an issue of mouse dragging behavior in general. We appreciate you giving us your valuable input!
Sorry for the delay in reporting. The undo issue after dragging the weight text field in Weights view has been fixed in 4.1.15-beta.