After upgrading to macOS 26.0 Tahoe my LibreOffice Base macros will not run. So opening database with macros enabled results in a freeze. Database runs fine with macros disabled. Before upgrade all worked normally with macros enabled - database start form was opened upon startup and buttons controlled forms and reports. Macro security settings are set to medium as before upgrade.
I would disable the startup directly with a opening a form. Doing this for testing here with a SUB, which is named the same way:
SUB DesignViewOn … will be the procedure, which opens the form.
Rename it to SUB DesignViewOn1 … and create another Procedure without content:
SUB DesignViewOn
END SUB
So you could start without executing anything and have a look, if you could find the macro, which isn’t working well with your MAC.
Which kind of database do you use? Internal HSQLDB?