I have looked at three records in the PINES database with multiple 505s and all three display both 505s in the bib record in the OPAC display:
https://gapines.org/eg/opac/record/5492867?_special=1;detail_record_view=0;locg=1;query=identifier%7Ctcn%3Aocn437275642;expand=marchtml#marchtml
https://gapines.org/eg/opac/record/2258201?locg=1;detail_record_view=0;page=0;_special=1;query=identifier%7Ctcn%3Aocm22905923;expand=marchtml#marchtml
https://gapines.org/eg/opac/record/5083151?locg=1;detail_record_view=0;page=0;_special=1;query=identifier%7Ctcn%3Aocn435816482;expand=marchtml#marchtml
I have looked at three records in the PINES database with multiple 505s and all three display both 505s in the bib record in the OPAC display:
https:/ /gapines. org/eg/ opac/record/ 5492867? _special= 1;detail_ record_ view=0; locg=1; query=identifie r%7Ctcn% 3Aocn437275642; expand= marchtml# marchtml
https:/ /gapines. org/eg/ opac/record/ 2258201? locg=1; detail_ record_ view=0; page=0; _special= 1;query= identifier% 7Ctcn%3Aocm2290 5923;expand= marchtml# marchtml
https:/ /gapines. org/eg/ opac/record/ 5083151? locg=1; detail_ record_ view=0; page=0; _special= 1;query= identifier% 7Ctcn%3Aocn4358 16482;expand= marchtml# marchtml