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Two-finger scrolling not working reliably on mail messages in OS X Catalina 10.15.6 but works on other apps. I have MacBook Pro 2018. Problem has persisted for a year or more. I've force-quit Mail, rebooted OS X many times. 1-finger and 3-finger gestures work fine. 2-finger scroll does not, almost half the time. This only happens with Mac Mail app.
MacBook
Does this occur for a different user, e.g., Guest? How to test an issue in another user account on your Mac.
Does this occur after starting up in Safe Mode?
Consider the possibility of a third party software conflict. EtreCheck can be used to investigate what is installed. You can post the report here. Someone might spot something.
Does this occur for a different user, e.g., Guest? How to test an issue in another user account on your Mac.
Does this occur after starting up in Safe Mode?
Consider the possibility of a third party software conflict. EtreCheck can be used to investigate what is installed. You can post the report here. Someone might spot something.
Thank you. I tried (1) Different user: same result (2) Safe mode: same result (3) EtreCheck: ran OK, nothing obvious. Some results follow:
EtreCheck version: 5.5.5 (5111)
Report generated: 2020-07-28 04:58:38
Download EtreCheck from https://etrecheck.com
Runtime: 1:27
Performance: Excellent
Sandbox: Enabled
Full drive access: Disabled
Problem: Other problem
Description:
Two-finger scrolling not working reliably on mail messages in OS X Cat
alina 10.15.6 but works on other apps. I have MacBook Pro 2018. Proble
m has persisted for a year or more. I've force-quit Mail, rebooted OS
X many times. 1-finger and 3-finger gestures work fine. 2-finger scro
ll does not, almost half the time. This only happens with Mac Mail app
.
Major Issues:
Anything that appears on this list needs immediate attention.
System Integrity Protection disabled - System Integrity Protection is disabled. This computer is at risk of malware infection.
Apple security disabled - Apple security software is disabled. This computer is at risk of malware infection.
Minor Issues:
These issues do not need immediate attention but they may indicate future problems or opportunities for improvement.
Unsigned files - There are unsigned software files installed. Apple has said that unsigned software will not run by default in a future version of the operating system.
Corrupt hosts file - Hosts file is corrupt.
Limited drive access - More information may be available with Full Drive Access.
Kernel extensions present - This machine has kernel extensions that may not work in the future.
Hardware Information:
MacBook Pro (15-inch, 2018-2019)
MacBook Pro Model: MacBookPro15,1
2.6 GHz 6-Core Intel Core i7 (i7-8850H) CPU: 6-core
16 GB RAM - Not upgradeable
BANK 0/ChannelA-DIMM0 - 8 GB DDR4 2400
BANK 2/ChannelB-DIMM0 - 8 GB DDR4 2400
Battery: Health = Normal - Cycle count = 174
Video Information:
Intel UHD Graphics 630 - VRAM: 1536 MB
Color LCD (built-in) 3360 x 2100
Radeon Pro 560X - VRAM: 4 GB
Drives:
disk0 - APPLE SSD AP0512M 500.28 GB (Solid State - TRIM: Yes)
Internal PCI-Express 8.0 GT/s x4 NVM Express
disk0s1 - EFI [EFI] 315 MB
disk0s2 [APFS Container] 499.96 GB
disk1 [APFS Virtual drive] 499.96 GB (Shared by 5 volumes)
disk1s1 - M************ Data (APFS) [APFS Virtual drive] (Shared - 185.86 GB used)
disk1s2 - Preboot (APFS) [APFS Preboot] (Shared)
disk1s3 - Recovery (APFS) [Recovery] (Shared)
disk1s4 - VM (APFS) [APFS VM] (Shared - 1.07 GB used)
disk1s5 - Macintosh HD (APFS) (Shared - 11.24 GB used)
Mounted Volumes:
disk1s1 - M************ Data [APFS Virtual drive]
499.96 GB (Shared - 185.86 GB used, 320.59 GB available, 301.02 GB free)
APFS
Mount point: /System/Volumes/Data
Encrypted
disk1s4 - VM [APFS VM]
499.96 GB (Shared - 1.07 GB used, 301.02 GB free)
APFS
Mount point: /private/var/vm
Encrypted
disk1s5 - Macintosh HD
499.96 GB (Shared - 11.24 GB used, 320.59 GB available, 301.02 GB free)
APFS
Mount point: /
Encrypted
Read-only: Yes
Network:
Interface en7: TomTom
Interface en9: Apple USB Ethernet Adapter
Interface en0: Wi-Fi
802.11 a/b/g/n/ac
Interface en6: Bluetooth PAN
Interface bridge0: Thunderbolt Bridge
System Software:
macOS Catalina 10.15.6 (19G73)
Time since boot: Less than an hour
Is there any pattern to the messages that do not work properly? Does it happen that a given message works fine sometimes but others not? Do the offending messages have lots of graphics, html, fancy formatting? What exactly happens when the scrolling isn't working properly? No scrolling at all? Intermittent scrolling? Etc?
Is there any pattern to the messages that do not work properly? Not that I can deduce.
Does it happen that a given message works fine sometimes but others not? Yes. Sometimes it 2-finger scrolls properly, and a few seconds later does not scroll at all; the cursor just does not move, though it moves with 1-finger or 3-finger gestures.
Do the offending messages have lots of graphics, html, fancy formatting? Yes, the current example is an Economist daily newsletter email. Here's a link to a similar one https://view.e.economist.com/?qs=b1ec57ac0310a55be7d40c7c71c3894c5457aae3320b3ac70d767a1c9372b656cb598cda26bf0de92c279d18da3961ea3fa2c26198a06df30dbc34dfec8db9fc0de3dfe3169f5ff2bde131972fda4d77
One clue: I forwarded the email to myself. The forwarded version looks the same, but does not exhibit the problem; scrolling is proper. I suppose I could compare the html (?) code in each email to see the difference, but I have no idea how to.
What exactly happens when the scrolling isn't working properly? No scrolling at all? Intermittent scrolling? Etc? The email scrolls properly sometimes, or the cursor does not move at all.
Interesting. It sounds like the emails are being created/sent in a particular way which somehow bamboozles the Mail program. It could be a deficiency in Mail; it could be that the mail sender is breaking some rules. Maybe someone with knowledge of the inner workings of mail can chime in here. I've never encountered such a problem with any mail I have ever received.
CT, Thanks. I'm nervous about "full drive access" to my encrypted, confidential data.
Here's the whole etrecheck report, attached.
This doesn't seem to be the whole report. And you should give etrecheck "full drive access" when you run it.
Two-finger scrolling not working on mail messages in OS X Catalina 10.15.6 but works on other apps
