gog.com - The "Add to cart" button disappears after moving the mouse upon hover

[webcompat-bot]

URL: https://gog.com

Browser / Version: Firefox 82.0
Operating System: Linux
Tested Another Browser: Yes Chrome

Problem type: Design is broken
Description: Items not fully visible
Steps to Reproduce:
There are big game tiles, each with "Add to card button". When you hover over it, and then move out the cursor, the whole button dissappears. This happens both with and without WebRender on FF Nightly. This doesn't happen on Chrome - the button is always visible.

View the screenshot

View the screenshot

Browser Configuration

• None

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[softvision-oana-arbuzov]

Thanks for the report, I was able to reproduce the issue. The button disappears or flickers when the slideshow transition occurs.

Affected area:

<button ng-show="!tile.data.isInCart &amp;&amp; '1'" class="
                            big-spot__button
                                                                                     js-product-tile__button" gog-track-event="{ eventCategory: 'bigSpot', eventAction: 'click', eventLabel: 'addToCart' }">
	<div class="big-spot__button-content">
		<svg class="big-spot__add-to-cart-icon">
			<use xlink:href="/svg/cc041adc.svg#button-add-to-cart"></use>
		</svg>
		<div class="big-spot__button-text">
                                Add to cart                            </div>
	</div>
</button>

Tested with:
Browser / Version: Firefox Nightly 82.0a1 (2020-08-25)
Operating System: Windows 10 Pro

Moving to Needsdiagnosis for further investigation.

[ksy36]

This is a regression caused by enabling partial pre-render by default in nightly. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=1661316, so lets close this as a duplicate