Following the steps indicated here: https://docs.microsoft.com/en-us/power-bi/collaborate-share/service-embed-secure and adding the embed code that is generated from Power BI Service that is something like this:
<iframe width="600" height="373.5" src="https://app.powerbi.com/view?r=eyJrIjoiMD..." frameborder="0" allowFullScreen="true"></iframe>
The report is displayed correctly and everything's working fine, but regarding the share url is cut out and not displayed correctly on Edge Chromium and Chrome. It does work on Firefox, IE v11 and Safari.
For example, if the code was embedded on the page https://www.contoso.com/report.htm rather than showing the full URL in the share url, in Edge Chromium and Chrome is displayed just up to https://www.contoso.com/
The issue is reported internally and I will keep you posted with any updates.
This is happening because of a policy change on chromium based browsers. The workaround here is to use 'no-referrer-when-downgrade' policy in your report embed HTML so that it will override browser's default referrer policy.
We’ve identified the issue. As the fix involves lots of evaluation, coding and testing, there is no ETA at this time.