On Big Sur the native full-screen button works for the main jEdit view, but not for derived dialogs (e.g. search, hyper-search results).
See also https://bugs.openjdk.java.net/browse/JDK-8256465 (still unresolved).
On Big Sur the native full-screen button works for the main jEdit view, but not for derived dialogs (e.g. search, hyper-search results).
See also https://bugs.openjdk.java.net/browse/JDK-8256465 (still unresolved).
It is unclear how to address this properly, without an update by Apple or OpenJDK (not to be expected too soon).
As intermediate solution, the soft jEdit full-screen action has been improved slightly in Isabelle/d77bb4441250.