www.prestocard.ca - site is not usable

[webcompat-bot]

URL: https://www.prestocard.ca/en/

Browser / Version: Firefox 63.0
Operating System: Linux
Tested Another Browser: Yes

Problem type: Site is not usable
Description: Impossible to enter password
Steps to Reproduce:
Click sign in. Enter a valid email address. Attempt to click on password field. It will not accept input.

From webcompat.com with ❤️

[softvision-oana-arbuzov]

Thanks for the report, I was able to reproduce the issue but only on Linux Ubuntu 18.04.

Note: Not reproducible on Linux Ubuntu 16.04.

Affected area:

<div class="form-group signinwithoutaccount08">
	<label for="SignIn_Password">Password*</label>
	<input class="signin-input form-control signin-tabs_input error" id="SignIn_Password" autocomplete="off" type="password" data-daxmapper="Password" name="Password*" aria-required="true" aria-describedby="error_SignIn_Password">
	<span for="SignIn_Password" class="error" id="error_SignIn_Password">Your password must contain a minimum of one letter, one number, and be a minimum of six characters in length.</span>
</div>

Focus Event:

function(n) {
  jQuery(n.target).parents(".lower-menu--mobile").length < 1 && !jQuery(".LowerMenu-Mobile").is(":hidden") && (jQuery(".LowerMenu-Mobile").toggle("slow"), jQuery(".lower-menu--mobile__overflow").fadeOut("fast"), jQuery(".mobile-headermenu-icon").css("float", "left"))
}

Tested with:
Browser / Version: Firefox Nightly 63.0a1 (2018-08-09)

Moving to Needsdiagnosis for further investigation.
This issue is related to #18134.

[denschub]

As it turns out, we already know about this bug. It seems to be caused by a recent GTK update only available in Ubuntu 18.x so far, and it results in the whole browser loosing focus when a password field receives it. Sometimes, this just causes some additional drawing cycles and is only a perf issue, but in some cases, the password field looses focus as well, rendering it completely useless.

This issue is tracked in https://bugzilla.mozilla.org/show_bug.cgi?id=1451466, and I'll close this report as a duplicate of said Bugzilla issue.