How to use clipSelector for screenshot

[suntong]

How to use clipSelector for screenshot?

This works just fine:
https://puppetron.now.sh/screenshot/http://www.xe.com/currencycharts/%3Ffrom%3DUSD%26to%3DCAD%26view%3D1D?width=500&height=900

However, after adding &clipSelector=div.module.clearfix to the end of it, it is no longer working:

https://puppetron.now.sh/screenshot/http://www.xe.com/currencycharts/%3Ffrom%3DUSD%26to%3DCAD%26view%3D1D?width=500&height=900&clipSelector=div.module.clearfix

I got:

Oops. Something is wrong.

Protocol error (Emulation.setDeviceMetricsOverride): Invalid parameters height: integer value expected

Is it a bug?

[suntong]

BTW, IMO, when specifying clipSelector, then the dimensions should be determined by that element, which means that the global parameters width & height should not be mandatory.

[suntong]

I don't even know how I was able to use the clipSelector previously, as I don't see how to do it from the web UI now, yet I don't see any code changes since my question. Strange (Oh, I was doing from cli). Anyway,

I took a look at the code, and apparently it was implemented before screenshot for a specific element was available. Now it is --
https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#elementhandlescreenshotoptions

hope it'll get fixed soon (and add an optional input for it on web UI too). thx.