Notice worse performance for Angular websites?

[bnbarak]

I wonder if anyone has intuition or empirical data on performance differences across website technologies. In our internal evals we created a plain JavaScript site to test our wrappers and we consistently get near 100 percent accuracy. But we see some Angular sites underperform by a very wide margin.

1. Simple input field interactions using the observe then act pattern fail more than we would expect.
2. Dropdowns that render elements at the root of the document such as hover style dropdowns succeed only about ten percent of the time

I am about to create a dedicated Angular eval set, but I am curious whether others have seen similar issues across different frameworks. I can understand how this might happen if models are trained more heavily on React than Angular, but I am mostly looking for solutions or workarounds.