Probably not the reason, but worth to do a quick check:
Sometimes the update cache interferes, so if something's odd with updates - some module (or core) claims to have updated, but then...
The issue with checking for updates in the BackdropCMS dashboard makes website development and maintenance more difficult. I manage more than ten websites hosted by two different providers, one...
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Not perfect, but sometimes I use the specific
hook_block_view_system_main_alterhook, fromhook_block_view_MODULE_DELTA_alter.Hello @akarso!
The change log is here: https://api.backdropcms.org/change-records/new-layout-module-implements-...
Basically either use layouts (custom or via UI to place blocks) and if you need to alter code or data on page load use
hook_preprocess_page().