Developer Console "Unpacking results" never finishes, even though log file indicates ready

So you think, OK, just dismiss the popup that says "Unpacking results" and get on with it.

The thing is, it looks as though the anonymous Apex code that was run, hasn’t quite finished, as though the commit hasn’t happened yet. Because the log file claims that DML updates were done, but when I look in Salesforce, the records haven’t changed.

This is my code, which attempts to put opportunities in a certain stage depending on whether a document exists in one of its quotes:

List<Opportunity> oppList = [SELECT Id FROM Opportunity WHERE StageName = 'Onderhandeling'];
System.debug('oppList.size = ' + oppList.size());

List<Quote> quoteList = [SELECT Id FROM Quote WHERE OpportunityId IN :oppList];
System.debug('quoteList.size = ' + quoteList.size());

List<Id> quoteListCopy = new List<Id>();
for (Quote q : quoteList) {
    quoteListCopy.add(q.Id);
}
System.debug('quoteListCopy.size = ' + quoteListCopy.size());

List<ContentDocumentLink> relevantQuoteIdList = [SELECT LinkedEntityId FROM ContentDocumentLink WHERE LinkedEntityId IN :quoteListCopy];
System.debug('relevantQuoteIdList.size = ' + relevantQuoteIdList.size());

List<Id> relevantQuoteIdListCopy = new List<Id>();
for (ContentDocumentLink c : relevantQuoteIdList) {
    relevantQuoteIdListCopy.add(c.LinkedEntityId);
}
System.debug('relevantQuoteIdListCopy.size = ' + relevantQuoteIdListCopy.size());

List<Quote> relevantOppIdList = [SELECT OpportunityId FROM Quote WHERE Id IN :relevantQuoteIdListCopy];
System.debug('relevantOppIdList.size = ' + relevantOppIdList.size());

Set<Id> oppIdList = new Set<Id>();
for (Quote q : relevantOppIdList) {
    oppIdList.add(q.OpportunityId);
}
System.debug('oppIdList.size = ' + oppIdList.size());
List<Opportunity> oppsToUpdate = [SELECT Id, StageName FROM Opportunity WHERE Id IN :oppIdList];
for (Opportunity o : oppsToUpdate) {
    System.debug('updating ' + o.Id);
    System.debug('current stage ' + o.StageName);
    o.StageName = 'Offerte aangeboden';
}
Database.SaveResult[] srList = Database.update(oppsToUpdate, false);

for (Database.SaveResult sr : srList) {
    if (sr.isSuccess()) {
        System.debug('Successfully updated opp. Opp ID: ' + sr.getId());
    }
    else {
        for(Database.Error err : sr.getErrors()) {
            System.debug('The following error has occurred.');
            System.debug(err.getStatusCode() + ': ' + err.getMessage());
            System.debug('Opp fields that affected this error: ' + err.getFields());
        }
    }
}

for (Opportunity o : [SELECT Id, StageName FROM Opportunity WHERE Id IN :oppIdList]) {
    System.debug('opp ' + o.Id);
    System.debug('current stage ' + o.StageName);
}

And this is part of the log file:

Line 722: 15:38:31.1 (51977582)|USER_DEBUG|[31]|DEBUG|oppIdList.size = 3
Line 743: 15:38:31.1 (56663672)|USER_DEBUG|[34]|DEBUG|updating 0063M000001twqYQAQ
Line 747: 15:38:31.1 (56739446)|USER_DEBUG|[35]|DEBUG|current stage Onderhandeling
Line 759: 15:38:31.1 (56974284)|USER_DEBUG|[34]|DEBUG|updating 0063M000002IBimQAG
Line 762: 15:38:31.1 (57000574)|USER_DEBUG|[35]|DEBUG|current stage Onderhandeling
Line 773: 15:38:31.1 (57156714)|USER_DEBUG|[34]|DEBUG|updating 0065800000kpzR1AAI
Line 776: 15:38:31.1 (57180768)|USER_DEBUG|[35]|DEBUG|current stage Onderhandeling
Line 3016: 15:38:31.1 (454870678)|USER_DEBUG|[42]|DEBUG|Successfully updated opp. Opp ID: 0063M000001twqYQAQ
Line 3027: 15:38:31.1 (455022304)|USER_DEBUG|[42]|DEBUG|Successfully updated opp. Opp ID: 0063M000002IBimQAG
Line 3038: 15:38:31.1 (455146372)|USER_DEBUG|[42]|DEBUG|Successfully updated opp. Opp ID: 0065800000kpzR1AAI
Line 3071: 15:38:31.1 (460035571)|USER_DEBUG|[54]|DEBUG|opp 0063M000001twqYQAQ
Line 3074: 15:38:31.1 (460077676)|USER_DEBUG|[55]|DEBUG|current stage Offerte aangeboden
Line 3085: 15:38:31.1 (460251465)|USER_DEBUG|[54]|DEBUG|opp 0063M000002IBimQAG
Line 3088: 15:38:31.1 (460274456)|USER_DEBUG|[55]|DEBUG|current stage Offerte aangeboden
Line 3099: 15:38:31.1 (460422242)|USER_DEBUG|[54]|DEBUG|opp 0065800000kpzR1AAI
Line 3102: 15:38:31.1 (460442947)|USER_DEBUG|[55]|DEBUG|current stage Offerte aangeboden

and:

15:38:31.425 (425795307)|LIMIT_USAGE_FOR_NS|(default)|
Number of SOQL queries: 7 out of 100
Number of query rows: 452 out of 50000
Number of SOSL queries: 0 out of 20
Number of DML statements: 1 out of 150
Number of DML rows: 3 out of 10000
Maximum CPU time: 73 out of 10000
Maximum heap size: 0 out of 6000000
Number of callouts: 0 out of 100
Number of Email Invocations: 0 out of 10
Number of future calls: 0 out of 50
Number of queueable jobs added to the queue: 0 out of 50
Number of Mobile Apex push calls: 0 out of 10