At the moment, I have to delete every climbing structure in my game and place it back every single time. It's 20 minutes in my zoo before I can actually relax and play.
With some I also have to check welfare, as tge game only notifies when welfare is red, but not orange. So a lot of my animals "suffer" without me noticing if I don't check after every restart. Which hurts the zoo reputation.
Definitely having the same problem here, with climbing as well as now, sometimes, water/diving. I've come to accept that every time I open the game, I'll have to plan enough time to go through a crash or two, then go through all my menus to check welfare and what broke since the last time I opened the file -- whether or not there has been an intervening update. I typically go overview - guest thoughts, then heatmaps for litter/pathing problems, then infrastructure for power/water maintenance, then animal welfare for climbing/diving loss, then I'll check each habitat and exhibit to see if my keepers are feeding and cleaning them. And then I can begin playing or building.
Most of the time I just go ahead with doing all of these checks, since I'm sitting down to play for an extended period, and because I love this game so much! But I admit there have been times where I know I only have a short window to play, and as a result have decided not to play at all, since I anticipate that I wouldn't have time to get anything done after I'd finished checking for things that got broken outside of my control.
I know a lot of people play with all those welfare settings turned off, so may only encounter these problems once in a while. That probably makes it harder for Frontier to identify and fix some of those problems, since they don't arise every time something happens, but rather only for those with particular settings on. And I'm sure that gets even more complicated since they don't really know which problems originate with frontier vs. steam vs. internet connectivity vs. each player's individual computer specs.
On my more patient days, my headcanon for this is that I'm the boss coming back to town to discover that my lazy employees haven't done their jobs while I've been away. So I kind of become like an inspector myself. I imagine that in real life climbing structures do need to be repaired through normal wear & tear, or that the paths have become worn down and need repaving, or that I'm draining and then refilling each body of water. But on my less patient days, I admit it's quite a chore to be manually asking the computer to recalculate all the things it had correctly calculated just a day ago!
And occasionally, I even think about it specifically as a management problem. When the mechanics check a habitat's barriers, why aren't they also checking the strength of the climbing equipment? When the caretakers are looking for trash, are they also reporting torn up paths or dilapidated bridges (my headcanon for pathing problems)? But I recognize that this headcanon is also a way of making excuses for the game and probably doesn't work for lots of other players (or even for me, on my less patient days!).