The bit field is shown only when status is "started"

src/rpc/blockchain.cpp

@@ -909,7 +909,7 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
             "  \"bip9_softforks\": {          (object) status of BIP9 softforks in progress\n"
             "     \"xxxx\" : {                (string) name of the softfork\n"
             "        \"status\": \"xxxx\",    (string) one of \"defined\", \"started\", \"locked_in\", \"active\", \"failed\"\n"
-            "        \"bit\": xx,             (numeric) the bit, 0-28, in the block version field used to signal this soft fork\n"
+            "        \"bit\": xx,             (numeric) the bit (0-28) in the block version field used to signal this softfork (only for \"started\" status)\n"
             "        \"startTime\": xx,       (numeric) the minimum median time past of a block at which the bit gains its meaning\n"
             "        \"timeout\": xx          (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in\n"
             "     }\n"