mnesia:add_backend_type(Alias, Module) after,mnesia:install_fallback("bk.BUP") error

[axpxp]

Describe the bug
mnesia:add_backend_type(Alias, Module) after,If the table is empty,Everything is fine,because Module:init_backend first call.
mnesia:add_backend_type(Alias, Module) after,If there's data in the table,mnesia:backup("bk.BUP") after mnesia:install_fallback("bk.BUP") after mnesia:start(),There will be bugs,because Module:init_backend not call.

To Reproduce
mnesia_rocksdb:create_schema([node()]),
mnesia:start(),
mnesia:add_backend_type(Type, Module)
mnesia:create_table(Name, [{Type, [node()]}),
insert some datas,
mnesia:backup("bk.BUP")
mnesia:install_fallback("bk.BUP")
mnesia:start()---Error reported here

Expected behavior
Backup works fine, thank you

Affected versions
OTP 25 26.

Additional context

[axpxp]

If you don't understand anything, feel free to ask me. I check online every day

[axpxp]

@IngelaAndin please help，thanks.

[IngelaAndin]

@axpxp Well yes it seems like you found a bug in an area of the code that is not much used (at least not by us). Of course it would be nice to get it fixed, but unfortunately it will not be a high priority for us.

[MarkoMin]

@axpxp What module are you using in mnesia:add_backend_type/2? Can you paste error message you get?

[axpxp]

@axpxp What module are you using in mnesia:add_backend_type/2? Can you paste error message you get?

erlang fallback execution sequence error

[axpxp]

@IngelaAndin I have sorted out the test code and can send it to you. As long as you test it, you will know. Please help me, thank you very much

[axpxp]

@IngelaAndin Please help,thank you.

[IngelaAndin]

@axpxp There is a plan for some of my co-workers to start looking at this. I see you already had some communication.