Hi LeoNatan thank you for taking the time to report this problem!
We've investigated this, and the issue appears to be on Slack's side.
We understand this feels like a regression. As part of our "Liquid Glass" update, we transitioned to the modern APIs that Apple recommends for iOS browsers. Unfortunately, this has highlighted an incompatibility in Slack's web app. We confirmed the same issue occurs in Safari, which shows the problem isn't specific to Orion.
Because the fix needs to happen within Slack's code, we unfortunately can't resolve it from our end. The best course of action would be to report this issue directly to Slack. We're sorry there isn't a more direct solution we can offer at this time.
Thank you for your help in making Orion a better browser!