Remix IDE v0.10.1 bug in transacting on VM deployed contracts

bug description.md

• Delete 1_Storage.sol, 2_owner.sol, 3_Ballot.sol, 4_Ballot.test.sol
• Add Contract1.sol and Contract2.sol
• Add SOLIDITY COMPILER and DEPLOY & RUN TRANSACTIONS plugins
• Select Deploy and Run tab
• CTRL-S to Compile Contract1.sol and click Deploy
• Test that the dumpDataCache function works in Contract1 by expanding it, populating the fields, clicking transact and then expanding the transaction results in the remix console.

Expected result:

input :  0x27...
decoded input : { anything : ..., ... }
decoded output   { "0": ... }

• Switch to Contract2.sol, CTRL-S to Compile Contract2.sol and click Deploy
• Retest the dumpDataCache function in Contract1.

Expected result:

input :  0x27...
decoded input : { anything : ..., ... }
decoded output   { "0": ... }

Actual result:

input :  0x27...
decoded input : -
decoded output : -

Bug reproduced on Firefox 76.0.1 for Ubuntu;

compiler versions v0.6.6+commit.6c089d02 and 0.4.26+commit.4563cfc

Contract1.sol

pragma solidity ^0.6.0;

contract Number1 {
    mapping (bytes32 => bytes32[]) dataCache;

    uint8 thisContract = 1;
    bytes32 isDifferentFromTheOther;

    function dumpDataCache (bytes32 anything) public returns (string memory, uint256, bytes32[] memory) {
        return ("Contract 1 returns:", thisContract, dataCache[anything]);
    }

}

Contract2.sol

pragma solidity ^0.6.0;

contract Number2 {
    mapping (bytes32 => bytes32[]) dataCache;

    uint8 thisContract = 2;

    function dumpDataCache (bytes32 anything) public returns (string memory, uint256, bytes32[] memory) {
        return ("Contract 2 returns:", thisContract, dataCache[anything]);
    }

}