Possibly earlier 5.3 versions too
Possibly since the fix
I've added a test case for this ticket & confirmed the issue happened on lucee. ACF works fine. I checked that, From Lucee 188.8.131.52 Issue has been occurred.
Pull request: https://github.com/lucee/Lucee/pull/633
Any chance of this being addressed with 5.3.1 / 5.3.2
I've added a fix for this issue. That was available in the above PR.