Keyboard problem in Android on the site, what is the reason?

Question

Android

Good day,
I would like to ask and raise for discussion the following question, which is even difficult to formulate.
On this project: diamondsearch.paasweb.co.il/show there is a following. problem:
Only on Android phones (I wanted to note that this does not happen on the iPhone), when we click on the carat block or the price block, then click on the Text box to change the value, the keyboard opens and then closes (instantly), and with it the block is closed. This can be easily seen if you open this block in your Android phone and repeat the steps described above.
Interestingly, if you go to the advanced search option (link above the results table), click on the 'Table' block and try to change the values ​​in the text box, everything will work fine. (the blocks and the function that opens them are identical). Moreover, we tried to open carat/price blocks in the window like advanced search options - it didn't help.
What could be the problem, and what could be the ways to solve it?
Thanks in advance.

Answer 1

the filter has onkeyup="format_inp(this)", but advanced search doesn't.
deeper I'm too lazy ;) but for sure, it's there.