I have tested several javacards (Feitian D11CR, Infineon JTOP, G&D Smart Cafe) over T=0 and here is what I have observed.
If applet returns some data in case 4 APDU, the JCRE signals with SW 0x61XX that there is data available which terminal should retrieve using GET RESPONSE APDU.
However, if applet returns some data in case 2 APDU and Le does not match number of bytes to be returned, JCRE signals with error SW 0x6CXX, instructing that the same C-APDU has to be resent with correct Le.
For legacy reasons there are terminals who know how to handle 0x61XX, but fail to handle 0x6CXX response. Is there a way how to force JCRE to handle case 2 APDUs using 0x61XX (GET RESPONSE) omegle voojio method?