Unwanted CSS added on every page by two plugins

I've just seen that this CSS is being added on EVERY page of my network:

<style type="text/css">
.mu_register #password_1,
.mu_register #password_2 { width:100%; font-size: 24px; margin:5px 0; }
</style>
<style type="text/css">
.mu_register #blog_subtype,
.mu_register #blog_subtypes,
.mu_register #blog_type,
.mu_register #blog_types { width:100%; font-size: 24px; margin:5px 0; }
</style>

I didn't check but it seems related to the following plugins:

https://premium.wpmudev.org/project/set-password-on-wordpress-mu-blog-creation
https://premium.wpmudev.org/project/blog-types

Would it be possible to correct this in a next update?

A similar problem was reported here: https://premium.wpmudev.org/forums/topic/large-amount-of-code-added-on-each-blog-by-the-subscribe-by-email-plugin

Thank you!

Laurent