Branch value editor: can't find text across multiple editors with Ctrl+F because the off-screen editors' text isn't rendered

[aminomancer]

I think lines in the code editor are not rendered until they become visible, presumably as a performance optimization. This can make it harder to find stuff with Ctrl+F though. Idk if there's some way to use content-visibility instead of the current approach.

Maybe this is unavoidable. It does cause me some trouble when I have an experiment with many branches, each with long messages, and I need to systematically edit a variable in all of the editors.

I know that each branch has its own find+replace module, but then I have to scroll down to manually find each editor (which can be hard as, when you have long branch values, the whole scrollable document looks like one giant editor as you scroll through it - the boundaries between each editor are tiny and easily missed), click inside it, and hit Ctrl+F for each branch. Being able to use a global find module (like firefox's) would alleviate this papercut. Maybe experimenter can have its own? Since then we'd be able to replace all and not just find all.

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