cirrhosis has no effect on weight as long as liver tests are normal, probably low vitamin d.tdf makes high parathormone and messes up vitamind/calcium pathways so be sure to have your vit d levels max of nomral at 90-100ng/ml, vit d is also needed to avoid liver fibrosis which is created by vit D deficiensy itslef
Yes, it is a known side effect. I had a similar issue, though mine was more related to bone density decreasing, then got switched to TAF and everything started to come back except for the bone density so I'm still weaker than I was when normal but better than I was when I was on TDF - Viread (and I unfortunately gained too much weight so working to take it off still). Most of this is contributed to a Vitamin D deficiency. It's been suggested to take 10,000 iu of Vitamin D3 Daily along with Vitamin K2 and other supplements. But of course, always check with your doctor first.