HTML Link is not working after setting Lang=Bangla


In my doc, there is a HTML fields. In the options I have

<div style="margin-left: 10px;"><a id="part_2_1_1_question" style="color: blue;"><u>Assessment question explanations</u></a></div>

On click event, a JavaScript function is called, which works fine for any language setup, except Bangla[BN].

Does anyone have any suggestions please!