The bell attachment is just the right size to fit on either of these, just like in the above linked ticket, but they cannot be placed this way.
MC-216241
Bells cannot be placed on the sides of glass panes or iron bars
Open
10
muzikbike
(Unassigned)
Confirmed
(Unassigned)
placement-and-support, placement-and-support-testing-area
1.16.5, 21w07a, 21w08a, 21w08b, 21w11a, ..., 1.19.4, 23w14a, 1.20.1, 1.20.4, 1.21
Retrieved
Can confirm