formula bug when create formula, which have ref field with type of link to table, and that table have a link to table field?

I have three tables.
table1:

Column 1 Column 2 Column 3 Column 4
Name(a formula: concat( field('Class‘), field(‘Item’)) Class Item
c1 i1
c1 i2
c2 i1
c2 i2

table2:

Column 1 Column 2 Column 3 Column 4
Head( a formula: concat( field(‘Tab’), field(‘Remak’) ) Tab (link to table1) Remake
c1i1red c1i1 red
c1i1green c1i1 green

everything works fine, i mean formula in first column. but in table3:

Column 1 Column 2 Column 3 Column 4
H-bad ( this not work as expected, formula is concat(field(‘Tab2’), field(‘commend’) ) Tab2 ( link to table 2) commend
now here show something like: “[{”“id”“: 4, ““value””: ““c1i1red””}]A” c1i1red A
c1i1green B

I don’t think the formula engine is handling nested table references as expected in this cricumstance.

However, a better approach may be to create lookup fields for the data you want to reference in the formula isntead. You can always hide those lookup columns if you need to.