Thin line showing in Website navigation div in new Chrome 69

Hello- I am investigating a rendering change in the navigation dropdown on under Chrome 69.0.3497.100 (Official Build) (64-bit). See attached screen where I've circled a thin line showing in the drop down navigation. I've confirmed the thin line does not show under Edge, Firefox and Safari and also including previous Chrome 68. I've tested with Mac and Windows Chrome 69.0.3497.100 and also Chrome Beta and Dev versions and yield the same result. Will we need to re-develop the site's navigation to render this ok under Chrome 69 and beyond or is there perhaps a related item on the docket that would resolve this in a future release. I'm interested if anyone sees a fix to this issue? Perhaps a small adjustment to the CSS?
Mark BDirector ITAsked:
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Jason CarsonComputer TechnicianCommented:
Check this part out...
<div class="left"></div>

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The css for that is ...
.left, .right {
    background: url( repeat-y;
    width: 21px;
    display: table-cell;

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Remove that background.
Mark BDirector ITAuthor Commented:
Hi Jason, thanks for feedback, that didn't seem to work, so I've just decided to remove the image backgrounds in all the divs in the dropdown and apply a background color to all divs and that seems to 'fix' the issue. Here's a sample I'm not sure what Google changed in Chrome v69, but we can live with this compromise for now.
Jason CarsonComputer TechnicianCommented:
When I visited the website in Chrome i could see what you where talking about. I right clicked on the slim line and clicked inspect, it gave me that div and css. In the browser I disabled the background image and the line disappeared.

Glad to hear you got it working..

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