I have 3 buttons. View, Open and Save. View and Open buttons in case of PDF attachment just preview the document, and Save button saves (downloads) it to the computer.
I missed that it downloaded too as it does Save rather than Save As, and it it went to a different folder than I was using and looking in for the Save As file.
Save As is better as you get that choice and also warnings of multiple copies.
I would prefer that the View just does a View without a save and then the Save should do Save As without a View.
Firefox is handling pdf files, else they wouldn’t open or save.
Interesting that Chrome also gives you 3 buttons whereas my Firefox (up to date) only shows 2.
Not sure what browser Stefan is using, but he also only gets 2 buttons.
Is that cause to investigate this issue a bit further?
Using Usermin 1.861 and Firefox 109.0.1, I can confirm the behavior that @Ilia describes above:
A small extra detail in my case is that in the case of Save button, the PDF attachment is saved to the computer and then the browser opens it (the saved file) immediately