Line space in array of checkboxes

[fslzia]

When creating a list of checkboxes using enum and array, there are many blank lines added almost equal to the number of items in the array. This moves actual checkboxes below title in front end.

Below is the partial schema showing language checkboxes:
"schema": { "title": "Asset Type(s)", "type": "object", "properties": { "key_info": { "type": "object", "properties": { "language": { "type": "array", "enum":["Arabic","Bulgarian","Croatian","Czech","Danish","Dutch","Estonian","Finnish","French","German","Greek","Hebrew","Hungarian","Italian","Latvian","Lithuanian","Norwegian","Polish","Portuguese","Romanian","Russian","Serbian","Slovakian","Slovenian","Spanish","Swedish","Turkish","Ukrainian","Other"],

Here is the front-end for above schema:

Browser console shows many empty divs above actual checkboxes: