It does switch in some voltage ranges with a relay inside so not really a problem there, but the relay and the signal going in to the DAC are not all that much in sync.
This means that as you cross the relay click boundary one way you may get an output that briefly drops to a very small amplitude before going to the new voltage level, but what is much worse is when you cross it the other way you get a much bigger signal than set for a short moment before it jumps back down to what you set it to. So careful if it is connected to something sensitive.
I am already considering getting one of those Siglent 2000X because i learned that i simply can't trust that the unit is outputting what the front panel is claiming it is. If you can look past the bugs it is still a good signal gen for the money and might be a good choice for a hobbyist. But i do serious R&D work in my lab so when i need a piece of equipment i expect it to work as it should, rather that babysit it all the time by constantly verifying that it is outputting what i set it to. But on the other hand i cant afford to buy only top notch professional gear(I still do have a quite a bit of hp/agilent gear), i am ok with a cheep piece of test gear performing not so great but as long as it works as it should. I love the cheep 50 dollar Atten hot air station i had for some time. Sure it looks and feels cheep as heck, but it got the job done every single time i needed it. I like it so much that i will probably never buy another hot air station until this one stops working. Tools don't have to be expensive to be good, or perform the best but they at least have to work reliably if you ask me.
Don't let this discourage you from buying one of these Hanteks. Just be mindful that this is not a true professional tool, its just something half way between a proper tool and the $10 ebay crap.