Forgot to mention: my hardware is a "MacBook Pro (Retina, 13-inch, Early 2015)" with a "Intel Iris Graphics 6100 1536 MB" graphics chip.

Can you reproduce this in latest Canary?

I've been using Canary since yesterday and, so far, haven't seen this issue.

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Unable to reproduce the issue on reported chrome version 68.0.3440.84 using Mac 10.13.3(Retina). Attaching screen-cast for reference.
Steps: 
---------
1. Launched reported chrome 
2. Opened multiple tabs 
3. Switched tabs by clicking on tabs and also by shortcut  
As we are not seen tab flashes.

@Reporter: Request you to retry this issue with fresh profile without any extensions/apps or reset all the flags and let us know if issue still persists. If possible provide URL where you have seen this issue.

Thanks.!

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Like I mentioned in the initial report, this issue manifests itself randomly during an extended browsing session and isn’t assiciated to any specific website that I’ve noticed. In a short session it is unlikely to manifest itself.

I don’t have any browser extensions and installed.

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Unable to reproduce the issue on reported chrome version 68.0.3440.84 and latest chrome 70.0.3513.0 using Mac 10.13.3(Retina). As the issue is not reproducible at TE end, adding 'TE-NeedsTriageHelp' label and requesting the UI>Browser>TabStrip team to look into the issue and help in further triaging.

Note: Removing Needs-Bisect label and feel free to add if required.

Thanks.!  

To add a second datapoint, I have also experienced this issue since upgrading to 68

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.84 Safari/537.36

I have the exact same symptoms; when switching tabs a previous tab is displayed which corresponds to a recently viewed tab. I.e view tab A, and then switch to tab B. Now when switching to tab C you will briefly (probably <100ms) see a rendering of tab A before tab C is rendered. You will sometimes continue to see tab A when switching to tabs D, E and F. It's not always the "last" tab rendered that you see.

Note the flash of previous content can include rendering from an incognito window even when it's been closed and you are switching between tabs elsewhere which makes it feel like a render buffer re-use issue.

Possibly related to ui::Compositor recycling in RWHVMac.

This will be fixed by MacViews in Chrome 69.

Note that in the video above, in comment 6, the bug actually *was* reproduced.

The problem happens at timecode 0:06 when switching from the Wikipedia tab to Google News. For just a single frame, the content of the third tab from the left is shown: a Google search for "googe".

Watch the attached gif for a slower playback of this portion of the video.

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