I tested to see if the system will drop 'thin' when I comment by entering about 5K occurrences of 'thin' in about 500 comments. All posted to the system successfully from my Linux (OpenSUSE, KDE) using Firefox.
I found an example of 'thin' missing in an alert; however, upon opening the post, 'thin' was not missing. That's not an OS browser related issue. Perhaps I'm mistaken about the bug being client related (i.e., OS-browser related).
 EdEarl
                                                
                                                Level 8
                                                June 15, 2018
                                            
                                                
                                                    EdEarl
                                                
                                                Level 8
                                                June 15, 2018                                            
                                        The post that generated the missing 'thin' is [agnostic.com]
I logged out of Agnostic.com, logged in again, and looked at my alerts. The one with 'thin' missing remained missing.
Is that a good thing or a bad thing? The 64 thousand dollar question?
 Freedompath
                                                
                                                Level 9
                                                June 14, 2018
                                            
                                                
                                                    Freedompath
                                                
                                                Level 9
                                                June 14, 2018                                            
                                        Dropping characters from posts isn't good.
Why?
 Charlene
                                                
                                                Level 9
                                                June 14, 2018
                                            
                                                
                                                    Charlene
                                                
                                                Level 9
                                                June 14, 2018                                            
                                        Admin was having difficulty identifying the software culprit that removed 'thin' from posts. My test has reduced the chance of it being in Linux, Firefox, the database, and much of the Agnostic.com software. It seems to suggest that some other interface, perhaps a phone app, is the culprit. However, my guess doesn't count, since I don't know the software. Admin and the software gurus can analyze the data and determine how the test may be useful.
@EdEarl well, arenβt you the smart one?!
@Freedompath Software Engineer in another life.