February Progress:
I’m even later than normal this month. 
Sorry about that!
Testnet Activation
After a slightly bumpy start, MWEB has successfully activated on testnet, and the chain is progressing forward. Thank you to Loshan and Charlie for driving this effort, and to the LTC community for really stepping up in a big way to help test and debug issues.
Speaking of which, there were a number of issues identified, mostly around:
1. Encrypted and non-HD wallets
Certain wallet setups were not able to generate stealth addresses with rc1, and during some flows would actually crash. Fortunately, those issues were found and reported right away, so we were able to get those fixed quickly.
2. Mining APIs
The code for solo mining was written and tested long ago, but of course, almost nobody solo mines these days. Mining is done through mining pools, which use a slightly different method for getting new mining jobs, and submitting new solutions. I didn’t have access to a mining pool at the time to test, so the stratum changes just went unimplemented. At least until last week.
Loshan and I worked together to code and test the mining API changes needed for pool mining, which he describes here. If you know any pool operators, please point them there so they can be ready for mainnet activation.
3. Wallet Transaction List
There were a few bugs around transaction building that seem to be fixed now, but most of the wallet issues are around how we display transactions. Between Mimblewimble’s pruning and coinjoining, and the way “pegging out” works with extension blocks, displaying the wallet history is one of the most complex changes we’ve had to make for MWEB.
Pegging out actually splits sends into 2 transactions, which can make for a very confusing history if we’re not careful. And I wasn’t very careful… Immediately after testnet activation, people were confused by the numbers of transactions and the amounts they were seeing. Fees displayed incorrectly, credits and debits were unreliable, and some really large or whacky numbers would appear at times. These were all just display issues, not actual problems with the amounts sent/received, but it didn’t make for a great user experience at all.
I’ve been doing my best to fix each of these issue as they’re identified, and it’s finally starting to act a little more predictably. We’ll continue to test and fix these issues until we’ve got a release candidate that we’re 100% comfortable with. Once that’s the case, we’ll create the full v0.21.2 release and start (gently) badgering node operators to upgrade and miners to start signaling.