See discussion at
https://sourceforge.net/p/gnucobol/discussion/cobol/thread/c66bab871e/?limit=50#9885
It is necessary to understand whether the bug concerns :
a. the TAB clause , now not working in a SCREEN SECTION field,
b. or whether the bug concerns the fact that the TAB clause in a SCREEN SECTION field should not be allowed (it could be that the TAB clause is to be accepted only in an ACCEPT and this is already working).
The same strange error message you get when using the
TABclause, you also get if you try to use theCOLORclause and also theCONTROLclause in theSCREEN SECTION.... but ... same asTAB:COLORandCONTROLclauses have tobe accepted inSCREEN SECTION?