Slack Update Broke Attachment Sending for Over a Week
A Slack update in March 2026 broke the ability to send attachments on mobile, with the issue persisting unresolved for at least 9 days. The regression directly blocks file-sharing workflows for users dependent on mobile Slack for work communication.
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Similar Problems
surfaced semanticallySlack Attachment Button Stops Working After App Update
After a Slack update, the plus/attachment button in chat becomes unresponsive, preventing users from sending files or images. The issue appears to be a regression introduced in the update with no in-app workaround available.
Slack mobile app file attachment button non-functional
The file and photo attachment button in the Slack mobile app fails to respond, preventing users from sharing files in conversations. This is a core communication feature that affects anyone using Slack on mobile. The issue appears to be a persistent app-level bug with no in-app workaround.
Slack Attachment Feature Crashes Gboard Keyboard on Android
Adding attachments in Slack on Android causes the Gboard keyboard to crash persistently, with the issue surviving phone restarts and lasting for extended periods. This blocks a core communication workflow for mobile Slack users on Android.
Slack mobile app suffers persistent lag and inconsistent feature reliability
Users report Slack experiencing inconsistent performance with lag and features failing intermittently. Without specifics or reproducible steps, this is low-signal noise that may reflect device-level or network-level issues rather than a core product problem.
Slack Mobile App Bloat Breaks Read State and Notification Sync
As Slack has added features over time, the mobile app has become bloated and no longer reliably synchronizes read/unread states, settings, and badge alerts with the desktop and web interfaces. The cross-platform consistency failures degrade the core communication experience for users who switch between devices throughout the day.
Problem descriptions, scores, analysis, and solution blueprints may be updated as new community data becomes available.