Problem in GQuotients

[thofma]

Observed behaviour

Playing around with GQuotients gave the following error. I am not too familiar with GAP. Maybe I am doing something wrong?

gap> G := FreeGroup(2);;
gap> Q := G / [G.1*G.2^-2*G.1, G.1^-1*G.2^-3];;
gap> GQuotients(Q, SmallGroup(12, 1));
Error, no method found! For debugging hints type ?Recovery from NoMethodFound
Error, no 1st choice method found for `ReversedOp' on 1 arguments at /Users/a/artifacts/b5c2f0f824457e5c391fb2491\
6f94d5d91c62c4f/share/gap/lib/methsel2.g:249 called from
ReversedOp( list
 ) at /Users/a/artifacts/b5c2f0f824457e5c391fb24\
916f94d5d91c62c4f/share/gap/lib/list.gi:2218 called from
Reversed( fp
 ) at /Users/a/artifacts/b5c2f0f824457e5c391fb24\
916f94d5d91c62c4f/share/gap/lib/sgpres.gi:2851 called from
NEWTC_ModifiedScanAndFill( DATA, 1, DATA.subgword[w], 1
 ); at /Users/a/artifacts/b5c2f0f824457e5c391fb2\
4916f94d5d91c62c4f/share/gap/lib/sgpres.gi:3052 called from
NEWTC_DoCosetEnum( freegens, freerels, subgens, aug, trace
 ) at /Users/a/artifacts/b5c2f0f824457e5c391fb24\
916f94d5d91c62c4f/share/gap/lib/sgpres.gi:3243 called from
NEWTC_CosetEnumerator( FreeGeneratorsOfFpGroup( a ),
 RelatorsOfFpGroup( a ), List( b, UnderlyingElement ), true, false
 ) at /Users/a/artifacts/b5c2f0f824457e5c391fb24\
916f94d5d91c62c4f/share/gap/lib/grpfp.gi:5270 called from
...  at *stdin*:9
type 'quit;' to quit to outer loop

My version:

gap> GAPInfo.Version;
"4.12.2"