Gif converted but not optimized

[EmmanuelBeziat]

Infos

• imagemin-webp version: 6.0.0

Code

config: [{
	test: /\.(jpe?g|png|gif)/,
	options: {
		quality: 75,
		lossless: false
	}
}]

Result

While the gif files are converted to webp format, there's absolutely zero optimization done on them. The weight remains unchanged. It works for png and jpg without any problem.

By using an external tool (https://ezgif.com/gif-to-webp), the optimization is done and the weight reduce significantly.

Did I miss anything in the doc, or is it a bug from the plugin?

Thanks