Brackets do not copy on chrome

[alexjbest]

On a structure such as https://leanprover-community.github.io/mathlib_docs/linear_algebra/bilinear_form.html#bilin_form the brackets surrounding each structure field are added via css, and on chrome do not copy when the whole block of text is selected for copy-paste.

I get

structure bilin_form (R : Type u) (M : Type v) [ring R] [add_comm_group M] [module R M] :
Type (max u v)
bilin : M → M → R
bilin_add_left : ∀ (x y z : M), c.bilin (x + y) z = c.bilin x z + c.bilin y z
bilin_smul_left : ∀ (a : R) (x y : M), c.bilin (a • x) y = a * c.bilin x y
bilin_add_right : ∀ (x y z : M), c.bilin x (y + z) = c.bilin x y + c.bilin x z
bilin_smul_right :

when I expect

structure bilin_form (R : Type u) (M : Type v) [ring R] [add_comm_group M] [module R M] :
Type (max u v)
(bilin : M → M → R)
(bilin_add_left : ∀ (x y z : M), c.bilin (x + y) z = c.bilin x z + c.bilin y z)
(bilin_smul_left : ∀ (a : R) (x y : M), c.bilin (a • x) y = a * c.bilin x y)
(bilin_add_right : ∀ (x y z : M), c.bilin x (y + z) = c.bilin x y + c.bilin x z)
(bilin_smul_right : ∀ (a : R) (x y : M), c.bilin x (a • y) = a * c.bilin x y)