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Failed assert in ui_paneltype_draw_impl while opening a viewport panel
Closed, ResolvedPublic

Description

System Information
Operating system: Darwin 18
Graphics card: Intel HD 6000

Blender Version
Broken: rBb29fd7bab80b236b9aa4d94a9ff6c

Short description of error

0   Blender BLI_system_backtrace + 52
1   Blender ui_paneltype_draw_impl + 325
2   Blender UI_paneltype_draw + 71
3   Blender ui_item_paneltype_func + 45
4   Blender ui_block_func_POPOVER + 141
5   Blender ui_popup_block_refresh + 344
6   Blender ui_popup_block_create + 496
7   Blender ui_popover_panel_create + 310
8   Blender ui_block_open_begin + 968
9   Blender button_activate_state + 1126
10  Blender ui_do_but_BLOCK + 405
11  Blender ui_do_button + 2709
12  Blender ui_handle_button_event + 1052
13  Blender ui_region_handler + 330
14  Blender wm_handler_ui_call + 532
15  Blender wm_handlers_do_intern + 715
16  Blender wm_handlers_do + 40
17  Blender wm_event_do_handlers + 2978
18  Blender WM_main + 39
19  Blender main + 1283
20  libdyld.dylib start + 1
21  ??? 0x0 + 1
BLI_assert failed: blender/source/blender/editors/interface/interface_layout.c:5579, ui_paneltype_draw_impl(), at 'panel->runtime.custom_data_ptr = ((void*)0)'

Exact steps for others to reproduce the error
Try to open Viewport overlays panel, or gizmos panel or shading panel.