"XYZ missing" link doesn't expand on Firefox

[peter-lyons-kehl]

When a (previously valid) Yawas note(s) can't match any text (since the page changed), the "XYZ missing" link does expand the Yawas float on Chrome. However, it doesn't expand the float on Firefox (84.0.2 - and previous or at least recent versions, too).

webpage: https://doc.rust-lang.org/nightly/book/ch03-02-data-types.html

The whole G. Bookmarks note (as copied from www.google.com/bookmarks) is:

<<In cases when many types are possible#green>> <<let guess: u32 = "42".parse().expect("Not a number!");#green>> <<scalar types: integers, floating-point numbers, Booleans, and characters#green>> <<i128#green>> <<u128#green>> <<isize#green>> <<usize#green>> <<Byte (u8 only)#green>> <<b'A'#green>> <<i32: this type is generally the fastest, even on 64-bit systems#green>> <<isize or usize is when indexing some sort of collection#green>> <<in debug mode, Rust includes checks for integer overflow#green>> <<panic at runtime#green>> <<in release mode with the --release#green>> <<not include checks for integer overflow#red>> <<u8, 256 becomes 0#red>> <<Relying on integer overflow’s wrapping behavior is considered an error#red>> <<to wrap explicitly, you can use the standard library type Wrapping#green>> <<default type is f64 because on modern CPUs it’s roughly the same speed as f32#green>> <<remainder = 43 % 5#green>> <<Booleans are one byte in size#red>> <<let f: bool#green>> <<char type is four bytes#red>> <<types of the different values in the tuple don’t have to be the same#green>> <<let tup: (i32, f64, u8) = (500, 6.4, 1);#green>> <<access a tuple element directly by using a period (.) followed by the index#green>> <<first index in a tuple is 0#green>> <<Arrays are useful when you want your data allocated on the stack#green>> <<rather than the heap#red>> <<let a: [i32; 5] = [1, 2, 3, 4, 5];#green>> <<to create an array that contains the same value for each element#green>> <<specify the initial#green>> <<followed by a semicolon#green>> <<then the length#green>> <<let a = [3; 5];#green>> <<array is@1#green>> <<allocated on the stack@1#green>>

Chrome: Working:

Firefox - Not working: the "1 missing" link doesn't do anything. (Ignore white-on-black, that comes from another extension which doesn't interfere here):

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No relevant error in Browser Console (from what I see - there are other errors/warnings but from unrelated Firefox core or extensions). The rest of Yawas on Firefox works marvels.