Subscribable IMAP folders missing in Mailboxes view

Originator:mvoelkl
Number:rdar://28359862 Date Originated:2016-09-19
Status:Duplicate Resolved:
Product:iOS Product Version:10.0.1
Classification: Reproducible:Yes
 
Area:
Mail

Summary:
On our mail server (accessed by IMAP) there's a folder tree under the read-only (possible error source!) folder "user", which is completely missing after refreshing the mailboxes view (by pull down to refresh). It was there up to iOS 9.3.3 and is also there after first setup of the account. This issue does occur with multiple user accounts, so it's not permission related. All other IMAP folders are shown correctly, except the read-only one with multiple subfolders (up to 5 levels).

Playing with the IMAP Inbox Prefix (setting to "user") temporarily solves the problem, but only shows folders under "user". Inbox, Sent, etc aren't shown any more (=> useless). Leaving the IMAP Inbox Prefix to default dosn't show "user" and its subfolders.

Steps to Reproduce:
1. Remove IMAP account
2. Reboot device
3. Add IMAP account 
4. Open Mail.app
5. All the missing mailboxes are there
5. Pull down to refresh 
6. "user" folder is missing, other IMAP folders are there

Expected Results:
Read-only folder "user" with all its subfolders is shown.

Actual Results:
Read-only folder "user" is missing after refresh of mailboxes view.

Version:
10.0.1 [14A403] (both devices)

Notes:


Configuration:
iPhone 6 64 GB and iPhone 6s 16 GB

Comments

Apple Developer Relations

This issue will be addressed in an update to iOS 10. We don’t provide timetables for bug fixes, so please test with each new update (e.g. 10.2, 10.3).

By mvoelkl at March 21, 2017, 10:18 a.m. (reply...)

Current status (as of 2016-09-29)

Duplicate of 28296591 (Open)

By mvoelkl at Oct. 24, 2016, 8:23 a.m. (reply...)

Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!