I think that most of other ligature fonts have lists of software that supports them. In case we want to start such a listing for FixedSys, here's my experience:
Windows + IDEA (Oracle JDK): renders ligatures, but have problems rendering latin A letter (it occupies no space in text and gets composed with a next character). There's a warning in IDEA interface telling about incompatibilities of Oracle JDK and fonts with ligatures.
Windows + IDEA (JetBrains JDK): no problems noticed.
Windows + ConEmu: no ligatures at all. Powerline stuff works okay though, so font is usable even without ligatures. I'd recommend to set font cell width manually to 8 (otherwise it'll have problems determining proper places for line wrapping and rendering Far Manager UI): Settings → Main → Main console font group → select Cell: 8 from the selector.
I think that most of other ligature fonts have lists of software that supports them. In case we want to start such a listing for FixedSys, here's my experience:
A
letter (it occupies no space in text and gets composed with a next character). There's a warning in IDEA interface telling about incompatibilities of Oracle JDK and fonts with ligatures.->
ligature doesn't work. That's a known problem of WPF text renderer.