Hello All,
We are on Dynamics 365 in the cloud and on the version listed below:
Microsoft Dynamics 365
2020 release wave 2 enabled
Server version: 9.1.0000.25236
Client version: 1.4.1746-2010.4
Since the early Oct 2020 upgrade, the label of the "Save and Close" buttons gets displayed with a vertical bar right in the middle of the button label for most activities in the Timeline control, as shown below:

Is anyone else experiencing this issue? What causes this issue and is there a solution to resolve this?
Thanks in advance.
Cheers,
Michael