No. Atlassian test with the latest versions of browsers when things are released, so you can usually rely on "my browser is quite recent so it should work", but they don't do broad-spread testing across huge ranges of browser versions. It's too much work, and it is far easier to just say "the latest stable versions of browsers today are x, so test against those X's and if older browser users have an issue, get them to upgrade".
Having said that, all three cases you list are things Atlassian are (roughly - don't think they bother with Ubuntu 14, as the current "good" version is 18 for example) testing against, but all of those browsers should certainly meet "good enough"
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