Information about updating to IOS or IPADOS 26.4

petrjahoda · 03-26-2026, 10:47 AM

Hello to all users.
New version of IOS and IPADOS, 26.4 has a bug (and looks like it is even for macOS)
I update one device to 26.4 and the automatic sync stopped working.
I then played with multiple device and here is the resume.

26.3 -> 26.3 = 100% automatic sync
26.4 -> 26.3 = 100% automatic sync
26.3 -> 26.4 = 0% automatic sync
26.4 -> 26.4 = 0% automatic sync

The bug was already reported by another developer: https://developer.apple.com/forums/t...ge=1#881764022

There is one workaround, switching between the apps (meaning the app goes to background and then to foreground).

Hope Apple will fix this soon.

peaceridge · 03-26-2026, 06:38 PM

I'm not trying to sync JustRead. But I found that after 26.4, other ereading apps can't detect OPDS catalogs from Calibre. Just in case that helps in debugging.

petrjahoda · Today, 11:35 AM

Information for others
As this looks like a global issue with 26.4 (apps from delivery services stopped showing notifications about delivery, for example), version 1.9 has a manual sync every time you switch between tabs.

03-26-2026, 10:47 AM	#1
petrjahoda Groupie Posts: 194 Karma: 46376 Join Date: Dec 2025 Device: iphone	Information about updating to IOS or IPADOS 26.4 Hello to all users. New version of IOS and IPADOS, 26.4 has a bug (and looks like it is even for macOS) I update one device to 26.4 and the automatic sync stopped working. I then played with multiple device and here is the resume. 26.3 -> 26.3 = 100% automatic sync 26.4 -> 26.3 = 100% automatic sync 26.3 -> 26.4 = 0% automatic sync 26.4 -> 26.4 = 0% automatic sync The bug was already reported by another developer: https://developer.apple.com/forums/t...ge=1#881764022 There is one workaround, switching between the apps (meaning the app goes to background and then to foreground). Hope Apple will fix this soon.

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03-26-2026, 06:38 PM	#2
peaceridge Wizard Posts: 1,111 Karma: 4408398 Join Date: Feb 2009 Location: North Carolina Device: Kobo Aura1, Nexus7.2, Galaxy Tab A 8.4, Ipad Air & Mini 6	I'm not trying to sync JustRead. But I found that after 26.4, other ereading apps can't detect OPDS catalogs from Calibre. Just in case that helps in debugging.

Today, 11:35 AM	#3
petrjahoda Groupie Posts: 194 Karma: 46376 Join Date: Dec 2025 Device: iphone	Information for others As this looks like a global issue with 26.4 (apps from delivery services stopped showing notifications about delivery, for example), version 1.9 has a manual sync every time you switch between tabs.

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