possibly reproducible by talking to this npc and clicking between personal portrait, their chatbox, their portrait, my character actions, their chatbox
disproven later in this thread
result
chatbox of last actions overlaid on all other actions
along with chatbox not properly scaling to the text
fixed by reloading the save file
<color=orange><b>[Exception]</b></color>: IndexOutOfRangeException: Array index is out of range.
TMPro.TMP_Text.FillCharacterVertexBuffers (Int32 i, Int32 index_X4)
TMPro.TextMeshProUGUI.GenerateTextMesh ()
TMPro.TextMeshProUGUI.GenerateTextMesh ()
TMPro.TextMeshProUGUI.OnPreRenderCanvas ()
TMPro.TextMeshProUGUI.Rebuild (CanvasUpdate update)
UnityEngine.UI.CanvasUpdateRegistry.PerformUpdate ()
UnityEngine.Canvas:SendWillRenderCanvases()
could it be scaling related?