Problems displaying the windsock structure

Hello everyone, I have had this problem for a few days, I practically see the windsocks without their supporting structure. Could someone help me to solve it? Any advice is welcome! Thank you very much! PS: I haven’t made any changes to the sim lately, and I’m sure until a few days ago, everything was working fine.
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A mod conflict could cause this.
Any easy way to prove that is to start the sim in “Safe Mode”.
That mode does not load any addons.