MARC conversion--some headings ending in ) have it disappear after conversion

[gdegroat]

Some headings which have something in parentheses are losing the closing parenthesis when converted to MARC.

This is in Stage using Firefox, and is data from the Work template but converted by the MARC command on the Instance record. Here is a screenshot of https://api.stage.sinopia.io/resource/97598414-1c83-41dd-a043-d6ac1c931601

The data in question is the 610 Baker Street Irregulars (U.S. : Organization) which is missing the final parenthesis. However, this does not seem to be affecting the 651 (also from the work record) nor the 264 $a (from the instance record)

The same problem affects the 110 field in record https://api.stage.sinopia.io/resource/7858b95e-79fe-4341-8e28-5bb2fbafa415