mOS 26.1 and Safari problem. website loading not working properly

If you are willing try clearing your Safari website data for that website first.

Safari->Settings->Privacy->Manage Website Data...->search for that website and remove the data.

If that doesn’t work then try clearing Safari’s cache. A little more complicated though.

Safari->Settings->Advanced->scroll to the very bottom and check “Show features for web developers”. A new menu item at the top menu of the Safari app will appear labeled “Develop”. Click on the Develop menu and select “Empty Caches”. You’ll also see a keyboard shortcut to empty caches. Test again.

And if that doesn’t work then you either start bothering the website developer to fix it for Safari or you just resign yourself to use a different browser. Safari complies with all standardized web development practices and should have no issues with properly coded websites.

I'd like to chime in here and note that I am having site rendering issues all over the place in Safari in macOS Tahoe - both 26 and 26.1.

Local web-apps and Docker containers sometimes don't render properly too. I've cleared the cache continually - and tried in private windows - but it's inconsistent. sometimes it works, sometimes it doesn't.

As an example - I login to TrueNAS, and go to launch the Shell from the TrueNAS UI - it doesn't load.

Open the same TrueNAS shell page in (of all things) MS Edge on macOS - works fine - every time.

I use Safari simply because it auto-populates SMS MFA codes for you. might be strange I use safari for that feature alone - it is nice. Chromium has disabled it's use in macOS 26 which is a bit of a pain, meaning any chromium-based browsers don't do this at the moment.

As other comments have pointed out - Firefox it is I suppose!

Dagobert_ch wrote:

I have the Same Problem. Iobroker is not working anymore. OpenDTU the same, not working After update. There is a Problem with websockets. I have only iPad and iPhone. If I switch to Firefox, it works.

If you only have an iPhone & iPad I don't know why you posted in the Tahoe community. In any case, use Firefox if it works.

I don't know if you received my second reply to your first post but see this page: If Safari doesn't open a page or work as expected on Mac - Apple Support

suefromfareham wrote:

Thank you for previous answers but the post was deleted. I posted the original in the wrong place so am trying again.

Since the upgrading to mOS 26 and 26.1 I am having trouble loading maps in a certain website both on my iMac and my Macbook air. The site loaded correctly in mOS sequoia before the update.

The site will load in Google, Firefox, and Opera with no trouble.

It will load on my iPad safari running iOS 26.1

I would use what works.

I would not get bogged down on a single website issue.

Oh wow. There is a Bug in Safari since the last update, on different Plattforms. Looks like nobody is interested and the „official“ Solution is: use Firefox?

FWIW, I copied the URL in your original post, pasted it into Safari and it worked, so it seems more like some particular setting on your mac than an outright bug in Safari. Sorry if this had been discussed, but I have not seen that other thread you mentioned.

Seeing I don't use ioBroker or OpenDTU I can't tell you much about them. There is no "official solution". This is a user forum.

I have the Same Problem. Iobroker is not working anymore. OpenDTU the same, not working After update. There is a Problem with websockets. I have only iPad and iPhone. If I switch to Firefox, it works.

I wondered what happened to your previous post and my replies. Try opening Safari in safe mode by holding the shift key when you open it and see if it works then.