During rolling forward in `ReplayBlocks()` the UI progress starts with 0 then, once sync up again, jumps to 100%. This process can take pretty long and it would be good to show some progress steps within the RollingForwardBlock loop (`for (int nHeight = nForkHeight + 1; nHeight <= pindexNew->nHeight; ++nHeight) {`)
{
    AssertLockHeld(cs_main);
    if (chainActive.Tip() && chainActive.Tip()->GetBlockHash() == pcoinsTip->GetBestBlock()) return true;
    if (pcoinsTip->GetBestBlock().IsNull() && mapBlockIndex.size() == 1) {
        
        
        LogPrintf("%s: Connecting genesis block...\n", __func__);
        CValidationState state;
        if (!ActivateBestChain(state, chainparams)) {
            LogPrintf("%s: failed to activate chain (%s)\n", __func__, FormatStateMessage(state));
            return false;
        }
    }
    
    CBlockIndex* pindex = LookupBlockIndex(pcoinsTip->GetBestBlock());
    if (!pindex) {
        return false;
    }
    chainActive.SetTip(pindex);
    g_chainstate.PruneBlockIndexCandidates();
    LogPrintf("Loaded best chain: hashBestChain=%s height=%d date=%s progress=%f\n",
        chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(),
        FormatISO8601DateTime(chainActive.Tip()->GetBlockTime()),
        GuessVerificationProgress(chainparams.TxData(), chainActive.Tip()));
    return true;
}
CVerifyDB::CVerifyDB()