I mostly feel this on Microsoft stuff. O365 browser stuff was always buggy, but last month I had to fight to zoom in on something in PowerPoint. Pagination in Azure ML randomly broke, it took them a month to fix it.

Atlassian is also a bug factory, but I did not expect anything better of them. Each UI update they did to Confluence and Jira just made everything more confusing in the last 10 years.

Holy smokes is the browser versions of PPT, OneNote, word etc buggy, I could not believe that was an actual released product. Random page crashes, refresh loops, etc, all for the crime of using firefox on a mac. The bottom of their test matrix sure, but not exactly netscape on windows XP.