That’s true, but it’s more difficult and time consuming for the developers to solve bugs without having them registered in the bug tracking system. When using the in-game bug reporter, all the relevant log files, save files and a screenshot are added, which improves the chance of them being able to fix this issue. It also gives the devs a good overview of which bugs are currently in the game and allows them to link multiple cases. It’s true that you can only include one screenshot, but if you feel more screenshots are appropriate, you can always add to the bug report that you’ll add more screenshots on the forum. Make sure to include the issue number that you get after submitting the bug in the topic title when doing this.
In general, bugs that are only reported on the forum have a very low chance of being solved. So if you can still reproduce this issue, I strongly encourage you to bug report this 
.