Perhaps my CPU is too old (ADM Phenom II - no sse3, no avx, of course no avx2, too)
There may be another problem.
Downgrading to libotan-3.so.10, as well as to Thunderbird and KeepassXC, works again.
Without Downgrading KeepassXC too, KeepassXC says: error while loading shared libraries: libotan-3.so.11 cannot open shared object file: No such file or directory
My System:
Arch Manjaro, Last LTS Kernel, Xfce, X11, Nvidia 470 driver, ADM Phenom II x4 965
Please post at least the result of inxi -zv8 so we get more info about your system.
When posting the info, either put three backticks ( ` -sign) on an empty line before and after it, or paint over the text and then press “preformatted text” </> from the post toolbar. With long entries, you might also want to use “hide details” on it from behind the + -button on the toolbar to make the post more manageable.
I will add below a forum guide, and recommend you take the time to go through it.
Manjaro Forum guide
Welcome to the Manjaro community
As a new or infrequent forum user, please take some time to familiarise yourself with Forum requirements, and the many ways to use the forum to your benefit.
To that end, links are provided (below) - Please use them.
Be prepared to provide outputs from various commands when asked. It’s equally important to provide as much actionable information as possible in your first post, rather than simply indicating there is a problem.
Waiting for someone to blindly ask questions is also counter-productive – typically, nobody has a at their disposal – Instead, please help others to ask informed questions, based on information you provide.
Update Announcements
The Update Announcements contain important information and a Known Issues and Solutions section that should generally be checked before posting a request for support.
System Information
While information from *-fetch type apps might be fine for someone wishing to buy your computer, for Support purposes it’s better to ask your system directly;
Output of the inxi command (with appropriate parameters, and formatted according to forum guidelines) will generate information useful for those wishing to help:
at their disposal – Instead, please help others to ask informed questions, based on information you provide.