You’ve heard from several experts I respect so nothing I say below is any reason to believe otherwise. It’s simply a place to start your own research or to give to your attorney if you need to find out if it applies…
https://amihousebuyers.com/selling/disclosure/#:~:text=Key%2....
Do you have to disclose water damage when selling a house?
Yes. In Texas, the TREC Seller's Disclosure
form asks you if you are aware of any previous “Water Penetration” (Section 3) or “Previous Flooding” (Section 5). The TAR Seller's Disclosure form also asks about “Water Penetration,” but gets a bit more specific by asking about previous flooding issues by asking you to disclose “Previous Flooding into the Structures” and “Previous Flooding onto the Property.” Note that water penetration is not limited to flooding from rising water levels on the ground in a weather event. Water penetration can also include roof failures or pipe bursts that allow water to leak into or damage your home.
Either have the repaired area researched by your local expert and accept it. Or use it as a reason to bail if you don’t like it. Good luck.
Ps. While landlords are often exempt from these disclosures. Texas specifics does NOT exempt landlords, according to this website.