Electron framework in the desktop app leading to MacOS Tahoe slowdowns

Thank you so much for confirming cortig​!

And I'm glad to hear that there's no issues!

Everything seems fine for me with Dropbox 236.3.5800.

I also use this script that searches for cornermask specifically inside the Electron frameworks and Dropbox now seems OK. 

Hi Sascha F.​,

Just wanted to direct your attention to my reply to postnumbers​ in case this clears things up for you as well. Unless you're noticing any actual performance issues.

That is absolutely more than fair postnumbers​!

Better to be safe than sorry, I completely understand! Well hopefully in the meantime, some other users can weigh in on this to let us know their experience.

Have you noticed any issues cortig​?

Hi Neal,

Thanks for your reply. I’m monitoring the status of this topic as I’ve held off on installing macOS 26 until Dropbox’s issue related to Electron running under macOS 26 is resolved. I’ve used the tool I’ve provided a screenshot from to determine this. Maybe it’s based on an incorrect assumption.

In view of this, I defer to others to provide feedback based on actual usage.

I have no reason to expect that your team hasn’t resolved the issue, Neal. I’m just cautious, knowing the lost hours/days that rolling back the OS can take.

 Thanks again.

Hi postnumbers​,

Thanks for responding! I just wanted to clear something up. It looks like you're checking this using Furbo.

That tool looks up what version of Electron we're using and infers from the version that our app will cause the Tahoe performance issue, but we patched our Electron fork to address the issue, so even though we're on an older version we won't actually cause the performance regression.

Unfortunately some detection tools only look at the Electron version. The "Shamelectron" website actually looks at the contents of the app, for the specific piece of code that causes the issue, which is why it marks Dropbox as OK

If you check on https://avarayr.github.io/shamelectron/ you'll see that we have in fact fixed this issue.

However if you find that stopping & running Dropbox does impact your performance that is a different story and please let me know if this is the case.

I can confirm, that the new version is NOT fixing the issue with Electron Apps.

Looking forward to the fix.

Hi Neal,

Thanks for responding. I don't believe that 235.4.5905 fixes the issue.

Looking forward to the fix.

It would be great to get a fix soon. I literally cannot use Dropbox on my M4 laptop because I experience huge slowdowns on open / save dialogs whenever it's running. It's night and day. If Dropbox is running = huge lag. No Dropbox = fast.